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美国数学竞赛AMC8 -- 2010年真题解析(英文解析+中文解析)Problem 1Answer: CSolution:Given that these are the only math teachers at Euclid Middle School and we are told how many from each class are taking the AMC 8, we simply add the three numbers to find the total.11+8+9=28.中文解析:参加竞赛的学生总人数是：11+8+9=28. 答案是C。
Problem 2Answer: DSolution:Substitute a=5, b=10 into the expression for a@b to get: 5@10=(5*10)/(5+10)=50/15=10/3.中文解析：（5*10）/（5+10）=50/15=10/3. 答案是D。
Problem 3Answer: CSolution:The highest price was in Month 1, which was $17. The lowest price was in Month 3, which was $10. 17 is 17/10 =170% of 10, and is 170-100=70% more than 10. Therefore, the answer is 70. 中文解析：最高价是1月，17美元。
最低价格是3月10美元。
最高价比最低价多：（17-10）/10=70%。
答案是C。
Problem 4Answer: CSolution:Putting the numbers in numerical order we get the list 0,0,1,2,3,3,3,4 The mode is 3, The median is (2+3)/2=2.5. The average is 2. is The sum of all three is 3+2.5+2=7.5.中文解析：这组数按照从小到大的顺序排列是：0，0，1，2，3，3，3，4. 中位数Median是2.5；mode 是3，mean是16/8=2. 因此mean,median,mode的和是: 2.5+3+2=7.5. 答案是C。
2013 MCM ProblemsPROBLEM A:The Ultimate Brownie PanWhen baking in a rectangular pan heat is concentrated in the 4 corners and the product gets overcooked at the corners (and to a lesser extent at the edges). In a round pan the heat is distributed evenly over the entire outer edge and the product is not overcooked at the edges. However, since most ovens are rectangular in shape using round pans is not efficient with respect to using the space in an oven. Develop a model to show the distribution of heat across the outer edge of a pan for pans of different shapes - rectangular to circular and other shapes in between.Assume1. A width to length ratio of W/L for the oven which is rectangular in shape.2. Each pan must have an area of A.3. Initially two racks in the oven, evenly spaced.Develop a model that can be used to select the best type of pan (shape) under the following conditions:1. Maximize number of pans that can fit in the oven (N)2. Maximize even distribution of heat (H) for the pan3. Optimize a combination of conditions (1) and (2) where weights p and (1- p) are assigned to illustrate how the results vary with different values of W/L and p.In addition to your MCM formatted solution, prepare a one to two page advertising sheet for the new Brownie Gourmet Magazine highlighting your design and results.当在矩形盘子中烘烤食物时，热量会集中于四个角。
2013 AMC8 Problems1.Danica wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest number of additional cars she must buy in order to be able to arrange all her cars this way?2.A sign at the fish market says, "50% off, today only: half-pound packages for just $3 perpackage." What is the regular price for a full pound of fish, in dollars?What is the value of?3.4.Eight friends ate at a restaurant and agreed to share the bill equally. Because Judi forgot her money, each of her seven friends paid an extra $2.50 to cover her portion of the total bill. What was the total bill? 5.Hammie is in thegrade and weighs 106 pounds. His quadruplet sisters are tiny babiesand weigh 5, 5, 6, and 8 pounds. Which is greater, the average (mean) weight of these five children or the median weight, and by how many pounds?6.The number in each box below is the product of the numbers in the two boxes that touch it in the row above. For example, . What is the missing number in the top row?7.Trey and his mom stopped at a railroad crossing to let a train pass. As the train began to pass, Trey counted 6 cars in the first 10 seconds. It took the train 2 minutes and 45 seconds to clear the crossing at a constant speed. Which of the following was the most likely number of cars in the train?8.A fair coin is tossed 3 times. What is the probability of at least two consecutive heads?9.The Incredible Hulk can double the distance he jumps with each succeeding jump. If his first jump is 1 meter, the second jump is 2 meters, the third jump is 4 meters, and so on, then on which jump will he first be able to jump more than 1 kilometer?10.What is the ratio of the least common multiple of 180 and 594 to the greatest common factor of 180 and 594?11.Ted's grandfather used his treadmill on 3 days this week. He went 2 miles each day. On Monday he jogged at a speed of 5 miles per hour. He walked at the rate of 3 miles per hour on Wednesday and at 4 miles per hour on Friday. If Grandfather had always walked at 4 miles per hour, he would have spent less time on the treadmill. How many minutes less?12.At the 2013 Winnebago County Fair a vendor is offering a "fair special" on sandals. If you buy one pair of sandals at the regular price of $50, you get a second pair at a 40% discount, and a third pair at half the regular price. Javier took advantage of the "fair special" to buy three pairs of sandals. What percentage of the $150 regular price did he save?13.When Clara totaled her scores, she inadvertently reversed the units digit and the tens digit of one score. By which of the following might her incorrect sum have differed from the correct one?14.Abe holds 1 green and 1 red jelly bean in his hand. Bea holds 1 green, 1 yellow, and 2 red jelly beans in her hand. Each randomly picks a jelly bean to show the other. What is the probability that the colors match?15.If , , and , what is the product of , , and ?16.A number of students from Fibonacci Middle School are taking part in a community serviceproject. The ratio of -graders to -graders is , and the the ratio of -graders to-graders is . What is the smallest number of students that could be participating in the project?17.The sum of six consecutive positive integers is 2013. What is the largest of these six integers?18.Isabella uses one-foot cubical blocks to build a rectangular fort that is 12 feet long, 10 feet wide, and 5 feet high. The floor and the four walls are all one foot thick. How many blocks does the fort contain?19.Bridget, Cassie, and Hannah are discussing the results of their last math test. Hannah shows Bridget and Cassie her test, but Bridget and Cassie don't show theirs to anyone. Cassie says, 'I didn't get the lowest score in our class,' and Bridget adds, 'I didn't get the highest score.' What is the ranking of the three girls from highest to lowest?20.A rectangle is inscribed in a semicircle with longer side on the diameter. What is thearea of the semicircle?21.Samantha lives 2 blocks west and 1 block south of the southwest corner of City Park. Her school is 2 blocks east and 2 blocks north of the northeast corner of City Park. On school days she bikes on streets to the southwest corner of City Park, then takes a diagonal path through the park to the northeast corner, and then bikes on streets to school. If her route is as short as possible, how many different routes can she take?22.Toothpicks are used to make a grid that is 60 toothpicks long and 32 toothpicks wide. How many toothpicks are used altogether?23.Angle of is a right angle. The sides of are the diameters of semicirclesas shown. The area of the semicircle on equals , and the arc of the semicircle onhas length . What is the radius of the semicircle on ?24.Squares , , and are equal in area. Points and are the midpointsof sides and , respectively. What is the ratio of the area of the shaded pentagonto the sum of the areas of the three squares?25.A ball with diameter 4 inches starts at point A to roll along the track shown. The track iscomprised of 3 semicircular arcs whose radii are inches, inches, andinches, respectively. The ball always remains in contact with the track and does notslip. What is the distance the center of the ball travels over the course from A to B?2013 AMC8 Problems/Solutions1. ProblemDanica wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest number of additional cars she must buy in order to be able to arrange all her cars this way?Solution:In order to have her model cars in perfect, complete rows of 6, Danica must have a number ofcars that is a multiple of 6. The smallest multiple of 6 which is larger than 23 is 24, so she'll need to buy more model car.2.A sign at the fish market says, "50% off, today only: half-pound packages for just $3 per package." What is the regular price for a full pound of fish, in dollars?ProblemSolution: The 50% off price of half a pound of fish is $3, so the 100%, or the regular price, of a half pound of fish is $6. Consequently, if half a pound of fish costs $6, then a whole pound of fish is dollars.What is the value of?3. ProblemNotice that we can pair up every two numbers to make a sum of 1:SolutionTherefore, the answer is .4. ProblemEight friends ate at a restaurant and agreed to share the bill equally. Because Judi forgot her money, each of her seven friends paid an extra $2.50 to cover her portion of the total bill.What was the total bill?Each of her seven friends paidto cover Judi's portion. Therefore, Judi's portion mustbe. Since Judi was supposed to payof the total bill, the total bill must be.Solution5.Hammie is in thegrade and weighs 106 pounds. His quadruplet sisters are tiny babiesand weigh 5, 5, 6, and 8 pounds. Which is greater, the average (mean) weight of these fivechildren or the median weight, and by how many pounds?ProblemLining up the numbers (5, 5, 6, 8, 106), we see that the median weight is 6 pounds. SolutionThe average weight of the five kids is .Therefore, the average weight is bigger, bypounds, making the answer.6. The number in each box below is the product of the numbers in the two boxes that touch it in the row above. For example,. What is the missing number in the top row?ProblemSolutionLet the value in the empty box in the middle row be , and the value in the empty box in the top row be . is the answer we're looking for.Solution 1: Working BackwardsWe see that, making.It follows that, so.Another way to do this problem is to realize what makes up the bottommost number. Thismethod doesn't work quite as well for this problem, but in a larger tree, it might be faster. (In this case, Solution 1 would be faster since there's only two missing numbers.)Solution 2: Jumping Back to the StartAgain, let the value in the empty box in the middle row be , and the value in the empty box in the top row be . is the answer we're looking for.We can write some equations:Now we can substitute into the first equation using the two others:7. Trey and his mom stopped at a railroad crossing to let a train pass. As the train began to pass,Trey counted 6 cars in the first 10 seconds. It took the train 2 minutes and 45 seconds to clearthe crossing at a constant speed. Which of the following was the most likely number of cars inthe train?ProblemIf Trey saw, then he saw.Solution 12 minutes and 45 seconds can also be expressed asseconds.Trey's rate of seeing cars,, can be multiplied byon the top andbottom (and preserve the same rate):. It follows that the most likely number of cars is.2 minutes and 45 seconds is equal to.Solution 2Since Trey probably counts around 6 cars every 10 seconds, there are groups of 6cars that Trey most likely counts. Since, the closest answer choice is.8. A fair coin is tossed 3 times. What is the probability of at least two consecutive heads?ProblemFirst, there areways to flip the coins, in order.Solution The ways to get two consecutive heads are HHT and THH. The way to get three consecutive heads is HHH.Therefore, the probability of flipping at least two consecutive heads is .9. The Incredible Hulk can double the distance he jumps with each succeeding jump. If his first jump is 1 meter, the second jump is 2 meters, the third jump is 4 meters, and so on, then onwhich jump will he first be able to jump more than 1 kilometer?ProblemThis is a geometric sequence in which the common ratio is 2. To find the jump that would be over a 1000 meters, we note that. SolutionHowever, because the first term isand not, the solution to the problem is10. What is the ratio of the least common multiple of 180 and 594 to the greatest common factorof 180 and 594?ProblemTo find either the LCM or the GCF of two numbers, always prime factorize first. Solution 1The prime factorization of . The prime factorization of .Then, find the greatest power of all the numbers there are; if one number is one but not the other, use it (this is ). Multiply all of these to get 5940.For the GCF of 180 and 594, use the least power of all of the numbers that are in bothfactorizations and multiply. = 18. Thus the answer = =.We start off with a similar approach as the original solution. From the prime factorizations, the GCF is 18.Similar SolutionIt is a well known fact that. So we have,.Dividing by 18 yields .Therefore, .11. Ted's grandfather used his treadmill on 3 days this week. He went 2 miles each day. On Monday he jogged at a speed of 5 miles per hour. He walked at the rate of 3 miles per hour on Wednesday and at 4 miles per hour on Friday. If Grandfather had always walked at 4 miles per hour, he would have spent less time on the treadmill. How many minutes less?ProblemWe use that fact that . Let d= distance, r= rate or speed, and t=time. In this case, letrepresent the time.SolutionOn Monday, he was at a rate of . So,.For Wednesday, he walked at a rate of . Therefore,.On Friday, he walked at a rate of. So,. Adding up the hours yields++=.We now find the amount of time Grandfather would have taken if he walked atperday. Set up the equation,.To find the amount of time saved, subtract the two amounts: -=.To convert this to minutes, we multiply by 60.Thus, the solution to this problem is12. At the 2013 Winnebago County Fair a vendor is offering a "fair special" on sandals. If you buy one pair of sandals at the regular price of $50, you get a second pair at a 40% discount, and a third pair at half the regular price. Javier took advantage of the "fair special" to buy three pairs of sandals. What percentage of the $150 regular price did he save?ProblemFirst, find the amount of money one will pay for three sandals without the discount. We have.SolutionThen, find the amount of money using the discount: .Finding the percentage yields .To find the percent saved, we have13. ProblemWhen Clara totaled her scores, she inadvertently reversed the units digit and the tens digit of one score. By which of the following might her incorrect sum have differed from the correct one?Let the two digits be and. SolutionThe correct score was . Clara misinterpreted it as. The difference between thetwo iswhich factors into. Therefore, since the difference is a multiple of 9,the only answer choice that is a multiple of 9 is.14.Abe holds 1 green and 1 red jelly bean in his hand. Bea holds 1 green, 1 yellow, and 2 red jelly beans in her hand. Each randomly picks a jelly bean to show the other. What is the probability that the colors match?ProblemThe probability that both show a green bean is. The probability that both show ared bean is . Therefore the probability isSolution15. If ,, and , what is the product of, , and ?ProblemSolutionTherefore,.Therefore,.To most people, it would not be immediately evident that , so we can multiply 6'suntil we get the desired number:, so.Therefore the answer is16. A number of students from Fibonacci Middle School are taking part in a community serviceproject. The ratio of-graders to-graders is, and the the ratio of-graders to-graders is . What is the smallest number of students that could be participating inthe project?ProblemSolutionWe multiply the first ratio by 8 on both sides, and the second ratio by 5 to get the same number for 8th graders, in order that we can put the two ratios together:Solution 1: AlgebraTherefore, the ratio of 8th graders to 7th graders to 6th graders is. Since the ratiois in lowest terms, the smallest number of students participating in the project is.The number of 8th graders has to be a multiple of 8 and 5, so assume it is 40 (the smallest possibility). Then there are 6th graders and7th graders. The numbers ofstudents isSolution 2: Fakesolving17. The sum of six consecutive positive integers is 2013. What is the largest of these six integers?ProblemThe mean of these numbers is. Therefore the numbers are, so the answer isSolution 1Let thenumber be . Then our desired number is.Solution 2Our integers are , so we have that.Let the first term be. Our integers are. We have,Solution 318.Isabella uses one-foot cubical blocks to build a rectangular fort that is 12 feet long, 10 feet wide, and 5 feet high. The floor and the four walls are all one foot thick. How many blocks does the fort contain?ProblemThere arecubes on the base of the box. Then, for each of the 4 layers abovethe bottom (as since each cube is 1 foot by 1 foot by 1 foot and the box is 5 feet tall, there are4 feet left), there arecubes. Hence, the answer is.Solution 1 We can just calculate the volume of the prism that was cut out of the originalbox. Each interior side of the fort will be 2 feet shorter than each side of the outside. Since thefloor is 1 foot, the height will be 4 feet. So the volume of the interior box is.Solution 2The volume of the original box is . Therefore, the number of blockscontained in the fort is19. Bridget, Cassie, and Hannah are discussing the results of their last math test. Hannah shows Bridget and Cassie her test, but Bridget and Cassie don't show theirs to anyone. Cassie says, 'I didn't get the lowest score in our class,' and Bridget adds, 'I didn't get the highest score.' What is the ranking of the three girls from highest to lowest?ProblemIf Hannah did better than Cassie, there would be no way she could know for sure that she didn't get the lowest score in the class. Therefore, Hannah did worse than Cassie. Similarly, ifHannah did worse than Bridget, there is no way Bridget could have known that she didn't getthe highest in the class. Therefore, Hannah did better than Bridget, so our order isSolution20. Arectangle is inscribed in a semicircle with longer side on the diameter. What is thearea of the semicircle?ProblemSolutionA semicircle has symmetry, so the center is exactly at the midpoint of the 2 side on the rectangle, making the radius, by the Pythagorean Theorem,. The area is21. ProblemSamantha lives 2 blocks west and 1 block south of the southwest corner of City Park. Her school is 2 blocks east and 2 blocks north of the northeast corner of City Park. On school days she bikes on streets to the southwest corner of City Park, then takes a diagonal path through the park to the northeast corner, and then bikes on streets to school. If her route is as short as possible, how many different routes can she take?SolutionThe number of ways to get from Samantha's house to City Park is, and the number ofways to get from City Park to school is. Since there's one way to go through CityPark (just walking straight through), the number of different ways to go from Samantha's house to City Park to school22.Toothpicks are used to make a grid that is 60 toothpicks long and 32 toothpicks wide. How many toothpicks are used altogether?ProblemThere are 61 vertical columns with a length of 32 toothpicks, and there are 33 horizontal rowswith a length of 60 toothpicks. An effective way to verify this is to try a small case, i.e. a grid of toothpicks. Thus, our answer isSolution23.Angleof is a right angle. The sides ofare the diameters of semicircles as shown. The area of the semicircle on equals, and the arc of the semicircle onhas length . What is the radius of the semicircle on?ProblemIf the semicircle on AB were a full circle, the area would be 16pi. Therefore the diameter of the first circle is 8. The arc of the largest semicircle would normally have a complete diameter of 17. The Pythagorean theorem says that the other side has length 15, so the radius is.Solution 1We go as in Solution 1, finding the diameter of the circle on AC and AB. Then, an extended version of the theorem says that the sum of the semicircles on the left is equal to the biggest one, so the area of the largest is , and the middle one is , so the radius is .Solution 224. Squares, , andare equal in area. Pointsandare the midpointsof sidesand, respectively. What is the ratio of the area of the shaded pentagonto the sum of the areas of the three squares?ProblemSolution 1First let(whereis the side length of the squares) for simplicity. We can extenduntil it hits the extension of. Call this point. The area of trianglethen isThe area of rectangleis. Thus, our desired area is. Now, the ratio of the shaded area to the combined area of the three squares is.Solution 2Let the side length of each square be 1.Let the intersection ofandbe .Since, . Sinceand are vertical angles, theyare congruent. We also haveby definition.So we haveby congruence. Therefore,.Since andare midpoints of sides,. This combined withyields.The area of trapezoidis.The area of triangleis.So the area of the pentagon is .The area of the 3 squares is . Therefore, .Solution 3Let the intersection of andbe .Now we haveand .Because both triangles has a side on congruent squares therefore.Becauseand are vertical angles. Also bothand are right angles so .Therefore by AAS (Angle, Angle, Side) . Then translating/rotating the shadedinto the position ofSo the shaded area now completely covers the squareSet the area of a square asTherefore, .25.A ball with diameter 4 inches starts at point A to roll along the track shown. The track is comprised of 3 semicircular arcs whose radii are inches, inches, andinches, respectively. The ball always remains in contact with the track and does not slip. What is the distance the center of the ball travels over the course from A to B?ProblemThe radius of the ball is 2 inches. If you think about the ball rolling or draw a path for the ball (see figure below), you see that in A and C it loses inches, and it gains inches on B.So, the departurefrom the length of the track means that the answer is .Solution 1The total length of all of the arcs is . Since we want the path fromthe center, the actual distance will be shorter. Therefore, the only answer choice less thanis . This solution may be invalid because the actual distance can be longer if the path the center travels is on the outside of the curve, as it is in the middle bump. Solution 2。
2013 AMC8 Problems1.Danica wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest number of additional cars she must buy in order to be able to arrange all her cars this way?2.A sign at the fish market says, "50% off, today only: half-pound packages for just $3 perpackage." What is the regular price for a full pound of fish, in dollars?What is the value of?3.4.Eight friends ate at a restaurant and agreed to share the bill equally. Because Judi forgot her money, each of her seven friends paid an extra $2.50 to cover her portion of the total bill. What was the total bill? 5.Hammie is in thegrade and weighs 106 pounds. His quadruplet sisters are tiny babiesand weigh 5, 5, 6, and 8 pounds. Which is greater, the average (mean) weight of these five children or the median weight, and by how many pounds?6.The number in each box below is the product of the numbers in the two boxes that touch it in the row above. For example, . What is the missing number in the top row?7.Trey and his mom stopped at a railroad crossing to let a train pass. As the train began to pass, Trey counted 6 cars in the first 10 seconds. It took the train 2 minutes and 45 seconds to clear the crossing at a constant speed. Which of the following was the most likely number of cars in the train?8.A fair coin is tossed 3 times. What is the probability of at least two consecutive heads?9.The Incredible Hulk can double the distance he jumps with each succeeding jump. If his first jump is 1 meter, the second jump is 2 meters, the third jump is 4 meters, and so on, then on which jump will he first be able to jump more than 1 kilometer?10.What is the ratio of the least common multiple of 180 and 594 to the greatest common factor of 180 and 594?11.Ted's grandfather used his treadmill on 3 days this week. He went 2 miles each day. On Monday he jogged at a speed of 5 miles per hour. He walked at the rate of 3 miles per hour on Wednesday and at 4 miles per hour on Friday. If Grandfather had always walked at 4 miles per hour, he would have spent less time on the treadmill. How many minutes less?12.At the 2013 Winnebago County Fair a vendor is offering a "fair special" on sandals. If you buy one pair of sandals at the regular price of $50, you get a second pair at a 40% discount, and a third pair at half the regular price. Javier took advantage of the "fair special" to buy three pairs of sandals. What percentage of the $150 regular price did he save?13.When Clara totaled her scores, she inadvertently reversed the units digit and the tens digit of one score. By which of the following might her incorrect sum have differed from the correct one?14.Abe holds 1 green and 1 red jelly bean in his hand. Bea holds 1 green, 1 yellow, and 2 red jelly beans in her hand. Each randomly picks a jelly bean to show the other. What is the probability that the colors match?15.If , , and , what is the product of , , and ?16.A number of students from Fibonacci Middle School are taking part in a community serviceproject. The ratio of -graders to -graders is , and the the ratio of -graders to-graders is . What is the smallest number of students that could be participating in the project?17.The sum of six consecutive positive integers is 2013. What is the largest of these six integers?18.Isabella uses one-foot cubical blocks to build a rectangular fort that is 12 feet long, 10 feet wide, and 5 feet high. The floor and the four walls are all one foot thick. How many blocks does the fort contain?19.Bridget, Cassie, and Hannah are discussing the results of their last math test. Hannah shows Bridget and Cassie her test, but Bridget and Cassie don't show theirs to anyone. Cassie says, 'I didn't get the lowest score in our class,' and Bridget adds, 'I didn't get the highest score.' What is the ranking of the three girls from highest to lowest?20.A rectangle is inscribed in a semicircle with longer side on the diameter. What is thearea of the semicircle?21.Samantha lives 2 blocks west and 1 block south of the southwest corner of City Park. Her school is 2 blocks east and 2 blocks north of the northeast corner of City Park. On school days she bikes on streets to the southwest corner of City Park, then takes a diagonal path through the park to the northeast corner, and then bikes on streets to school. If her route is as short as possible, how many different routes can she take?22.Toothpicks are used to make a grid that is 60 toothpicks long and 32 toothpicks wide. How many toothpicks are used altogether?23.Angle of is a right angle. The sides of are the diameters of semicirclesas shown. The area of the semicircle on equals , and the arc of the semicircle onhas length . What is the radius of the semicircle on ?24.Squares , , and are equal in area. Points and are the midpointsof sides and , respectively. What is the ratio of the area of the shaded pentagonto the sum of the areas of the three squares?25.A ball with diameter 4 inches starts at point A to roll along the track shown. The track iscomprised of 3 semicircular arcs whose radii are inches, inches, andinches, respectively. The ball always remains in contact with the track and does notslip. What is the distance the center of the ball travels over the course from A to B?2013 AMC8 Problems/Solutions1. ProblemDanica wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest number of additional cars she must buy in order to be able to arrange all her cars this way?Solution:In order to have her model cars in perfect, complete rows of 6, Danica must have a number ofcars that is a multiple of 6. The smallest multiple of 6 which is larger than 23 is 24, so she'll need to buy more model car.2.A sign at the fish market says, "50% off, today only: half-pound packages for just $3 per package." What is the regular price for a full pound of fish, in dollars?ProblemSolution: The 50% off price of half a pound of fish is $3, so the 100%, or the regular price, of a half pound of fish is $6. Consequently, if half a pound of fish costs $6, then a whole pound of fish is dollars.What is the value of?3. ProblemNotice that we can pair up every two numbers to make a sum of 1:SolutionTherefore, the answer is .4. ProblemEight friends ate at a restaurant and agreed to share the bill equally. Because Judi forgot her money, each of her seven friends paid an extra $2.50 to cover her portion of the total bill.What was the total bill?Each of her seven friends paidto cover Judi's portion. Therefore, Judi's portion mustbe. Since Judi was supposed to payof the total bill, the total bill must be.Solution5.Hammie is in thegrade and weighs 106 pounds. His quadruplet sisters are tiny babiesand weigh 5, 5, 6, and 8 pounds. Which is greater, the average (mean) weight of these fivechildren or the median weight, and by how many pounds?ProblemLining up the numbers (5, 5, 6, 8, 106), we see that the median weight is 6 pounds. SolutionThe average weight of the five kids is .Therefore, the average weight is bigger, bypounds, making the answer.6. The number in each box below is the product of the numbers in the two boxes that touch it in the row above. For example,. What is the missing number in the top row?ProblemSolutionLet the value in the empty box in the middle row be , and the value in the empty box in the top row be . is the answer we're looking for.Solution 1: Working BackwardsWe see that, making.It follows that, so.Another way to do this problem is to realize what makes up the bottommost number. Thismethod doesn't work quite as well for this problem, but in a larger tree, it might be faster. (In this case, Solution 1 would be faster since there's only two missing numbers.)Solution 2: Jumping Back to the StartAgain, let the value in the empty box in the middle row be , and the value in the empty box in the top row be . is the answer we're looking for.We can write some equations:Now we can substitute into the first equation using the two others:7. Trey and his mom stopped at a railroad crossing to let a train pass. As the train began to pass,Trey counted 6 cars in the first 10 seconds. It took the train 2 minutes and 45 seconds to clearthe crossing at a constant speed. Which of the following was the most likely number of cars inthe train?ProblemIf Trey saw, then he saw.Solution 12 minutes and 45 seconds can also be expressed asseconds.Trey's rate of seeing cars,, can be multiplied byon the top andbottom (and preserve the same rate):. It follows that the most likely number of cars is.2 minutes and 45 seconds is equal to.Solution 2Since Trey probably counts around 6 cars every 10 seconds, there are groups of 6cars that Trey most likely counts. Since, the closest answer choice is.8. A fair coin is tossed 3 times. What is the probability of at least two consecutive heads?ProblemFirst, there areways to flip the coins, in order.Solution The ways to get two consecutive heads are HHT and THH. The way to get three consecutive heads is HHH.Therefore, the probability of flipping at least two consecutive heads is .9. The Incredible Hulk can double the distance he jumps with each succeeding jump. If his first jump is 1 meter, the second jump is 2 meters, the third jump is 4 meters, and so on, then onwhich jump will he first be able to jump more than 1 kilometer?ProblemThis is a geometric sequence in which the common ratio is 2. To find the jump that would be over a 1000 meters, we note that. SolutionHowever, because the first term isand not, the solution to the problem is10. What is the ratio of the least common multiple of 180 and 594 to the greatest common factorof 180 and 594?ProblemTo find either the LCM or the GCF of two numbers, always prime factorize first. Solution 1The prime factorization of . The prime factorization of .Then, find the greatest power of all the numbers there are; if one number is one but not the other, use it (this is ). Multiply all of these to get 5940.For the GCF of 180 and 594, use the least power of all of the numbers that are in bothfactorizations and multiply. = 18. Thus the answer = =.We start off with a similar approach as the original solution. From the prime factorizations, the GCF is 18.Similar SolutionIt is a well known fact that. So we have,.Dividing by 18 yields .Therefore, .11. Ted's grandfather used his treadmill on 3 days this week. He went 2 miles each day. On Monday he jogged at a speed of 5 miles per hour. He walked at the rate of 3 miles per hour on Wednesday and at 4 miles per hour on Friday. If Grandfather had always walked at 4 miles per hour, he would have spent less time on the treadmill. How many minutes less?ProblemWe use that fact that . Let d= distance, r= rate or speed, and t=time. In this case, letrepresent the time.SolutionOn Monday, he was at a rate of . So,.For Wednesday, he walked at a rate of . Therefore,.On Friday, he walked at a rate of. So,. Adding up the hours yields++=.We now find the amount of time Grandfather would have taken if he walked atperday. Set up the equation,.To find the amount of time saved, subtract the two amounts: -=.To convert this to minutes, we multiply by 60.Thus, the solution to this problem is12. At the 2013 Winnebago County Fair a vendor is offering a "fair special" on sandals. If you buy one pair of sandals at the regular price of $50, you get a second pair at a 40% discount, and a third pair at half the regular price. Javier took advantage of the "fair special" to buy three pairs of sandals. What percentage of the $150 regular price did he save?ProblemFirst, find the amount of money one will pay for three sandals without the discount. We have.SolutionThen, find the amount of money using the discount: .Finding the percentage yields .To find the percent saved, we have13. ProblemWhen Clara totaled her scores, she inadvertently reversed the units digit and the tens digit of one score. By which of the following might her incorrect sum have differed from the correct one?Let the two digits be and. SolutionThe correct score was . Clara misinterpreted it as. The difference between thetwo iswhich factors into. Therefore, since the difference is a multiple of 9,the only answer choice that is a multiple of 9 is.14.Abe holds 1 green and 1 red jelly bean in his hand. Bea holds 1 green, 1 yellow, and 2 red jelly beans in her hand. Each randomly picks a jelly bean to show the other. What is the probability that the colors match?ProblemThe probability that both show a green bean is. The probability that both show ared bean is . Therefore the probability isSolution15. If ,, and , what is the product of, , and ?ProblemSolutionTherefore,.Therefore,.To most people, it would not be immediately evident that , so we can multiply 6'suntil we get the desired number:, so.Therefore the answer is16. A number of students from Fibonacci Middle School are taking part in a community serviceproject. The ratio of-graders to-graders is, and the the ratio of-graders to-graders is . What is the smallest number of students that could be participating inthe project?ProblemSolutionWe multiply the first ratio by 8 on both sides, and the second ratio by 5 to get the same number for 8th graders, in order that we can put the two ratios together:Solution 1: AlgebraTherefore, the ratio of 8th graders to 7th graders to 6th graders is. Since the ratiois in lowest terms, the smallest number of students participating in the project is.The number of 8th graders has to be a multiple of 8 and 5, so assume it is 40 (the smallest possibility). Then there are 6th graders and7th graders. The numbers ofstudents isSolution 2: Fakesolving17. The sum of six consecutive positive integers is 2013. What is the largest of these six integers?ProblemThe mean of these numbers is. Therefore the numbers are, so the answer isSolution 1Let thenumber be . Then our desired number is.Solution 2Our integers are , so we have that.Let the first term be. Our integers are. We have,Solution 318.Isabella uses one-foot cubical blocks to build a rectangular fort that is 12 feet long, 10 feet wide, and 5 feet high. The floor and the four walls are all one foot thick. How many blocks does the fort contain?ProblemThere arecubes on the base of the box. Then, for each of the 4 layers abovethe bottom (as since each cube is 1 foot by 1 foot by 1 foot and the box is 5 feet tall, there are4 feet left), there arecubes. Hence, the answer is.Solution 1 We can just calculate the volume of the prism that was cut out of the originalbox. Each interior side of the fort will be 2 feet shorter than each side of the outside. Since thefloor is 1 foot, the height will be 4 feet. So the volume of the interior box is.Solution 2The volume of the original box is . Therefore, the number of blockscontained in the fort is19. Bridget, Cassie, and Hannah are discussing the results of their last math test. Hannah shows Bridget and Cassie her test, but Bridget and Cassie don't show theirs to anyone. Cassie says, 'I didn't get the lowest score in our class,' and Bridget adds, 'I didn't get the highest score.' What is the ranking of the three girls from highest to lowest?ProblemIf Hannah did better than Cassie, there would be no way she could know for sure that she didn't get the lowest score in the class. Therefore, Hannah did worse than Cassie. Similarly, ifHannah did worse than Bridget, there is no way Bridget could have known that she didn't getthe highest in the class. Therefore, Hannah did better than Bridget, so our order isSolution20. Arectangle is inscribed in a semicircle with longer side on the diameter. What is thearea of the semicircle?ProblemSolutionA semicircle has symmetry, so the center is exactly at the midpoint of the 2 side on the rectangle, making the radius, by the Pythagorean Theorem,. The area is21. ProblemSamantha lives 2 blocks west and 1 block south of the southwest corner of City Park. Her school is 2 blocks east and 2 blocks north of the northeast corner of City Park. On school days she bikes on streets to the southwest corner of City Park, then takes a diagonal path through the park to the northeast corner, and then bikes on streets to school. If her route is as short as possible, how many different routes can she take?SolutionThe number of ways to get from Samantha's house to City Park is, and the number ofways to get from City Park to school is. Since there's one way to go through CityPark (just walking straight through), the number of different ways to go from Samantha's house to City Park to school22.Toothpicks are used to make a grid that is 60 toothpicks long and 32 toothpicks wide. How many toothpicks are used altogether?ProblemThere are 61 vertical columns with a length of 32 toothpicks, and there are 33 horizontal rowswith a length of 60 toothpicks. An effective way to verify this is to try a small case, i.e. a grid of toothpicks. Thus, our answer isSolution23.Angleof is a right angle. The sides ofare the diameters of semicircles as shown. The area of the semicircle on equals, and the arc of the semicircle onhas length . What is the radius of the semicircle on?ProblemIf the semicircle on AB were a full circle, the area would be 16pi. Therefore the diameter of the first circle is 8. The arc of the largest semicircle would normally have a complete diameter of 17. The Pythagorean theorem says that the other side has length 15, so the radius is.Solution 1We go as in Solution 1, finding the diameter of the circle on AC and AB. Then, an extended version of the theorem says that the sum of the semicircles on the left is equal to the biggest one, so the area of the largest is , and the middle one is , so the radius is .Solution 224. Squares, , andare equal in area. Pointsandare the midpointsof sidesand, respectively. What is the ratio of the area of the shaded pentagonto the sum of the areas of the three squares?ProblemSolution 1First let(whereis the side length of the squares) for simplicity. We can extenduntil it hits the extension of. Call this point. The area of trianglethen isThe area of rectangleis. Thus, our desired area is. Now, the ratio of the shaded area to the combined area of the three squares is.Solution 2Let the side length of each square be 1.Let the intersection ofandbe .Since, . Sinceand are vertical angles, theyare congruent. We also haveby definition.So we haveby congruence. Therefore,.Since andare midpoints of sides,. This combined withyields.The area of trapezoidis.The area of triangleis.So the area of the pentagon is .The area of the 3 squares is . Therefore, .Solution 3Let the intersection of andbe .Now we haveand .Because both triangles has a side on congruent squares therefore.Becauseand are vertical angles. Also bothand are right angles so .Therefore by AAS (Angle, Angle, Side) . Then translating/rotating the shadedinto the position ofSo the shaded area now completely covers the squareSet the area of a square asTherefore, .25.A ball with diameter 4 inches starts at point A to roll along the track shown. The track is comprised of 3 semicircular arcs whose radii are inches, inches, andinches, respectively. The ball always remains in contact with the track and does not slip. What is the distance the center of the ball travels over the course from A to B?ProblemThe radius of the ball is 2 inches. If you think about the ball rolling or draw a path for the ball (see figure below), you see that in A and C it loses inches, and it gains inches on B.So, the departurefrom the length of the track means that the answer is .Solution 1The total length of all of the arcs is . Since we want the path fromthe center, the actual distance will be shorter. Therefore, the only answer choice less thanis . This solution may be invalid because the actual distance can be longer if the path the center travels is on the outside of the curve, as it is in the middle bump. Solution 2。
2013年TEM8真题及答案TEST FOR ENGLISH MAJORS (2013)-GRADE EIGHT-TIME LIMIT: 195 MIN PART I LISTENING COMPREHENSION (35 MIN)SECTION A MINI-LECTUREIn this section you will hear a mini-lecture. You will hear the lecture ONCE ONLY. While listening, take notes on the important points. Your notes will not be marked, but you will need them to complete a gap-filling task after the mini-lecture. When the lecture is over, you will be given two minutes to check your notes, and another ten minutes to complete the gap-filling task on ANSWER SHEET ONE, using no more than three words in each gap. Make sure the word(s) you fill in is (are) both grammatically and semantically acceptable. You may refer to your notes while completing the task. Use the blank sheet for note-taking.Now listen to the mini-lecture.What Do Active Learners Do?There are difference between active learning and passive learning.Characteristics of active learners:I. reading with purposesA. before reading: setting goalsB. while reading: (1) ________ (1) ________II. (2) ______ and critical in thinking (2) ________i.e. information processing, e.g.— connections between the known and the new information— identification of (3) ______ concepts (3) ________— judgment on the value of (4) _____. (4) ________III. active in listeningA. ways of note-taking: (5) _______. (5) ________B. before note-taking: listening and thinkingIV. being able to get assistanceA. reason 1: knowing comprehension problems because of(6) ______. (6) ________B. reason 2: being able to predict study difficultiesV. being able to question informationA. question what they read or hearB. evaluate and (7) ______. (7) ________VI. last characteristicA. attitude toward responsibility— active learners: accept— passive learners: (8) _______ (8) ________B. attitude toward (9) ______ (9) ________— active learners: evaluate and change behaviour— passive learners: no change in approachRelationship between skill and will: will is more important in(10) ______. (10) ________Lack of will leads to difficulty in college learning.SECTION B INTERVIEWIn this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your answer sheet.Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions.Now listen to the interview.1.According to the interviewer, which of the following best indicates the relationship betweenchoice and mobility?A.Better education → greater mobility → more c hoices.B.Better education → more choices → greater mobility.C.Greater mobility → better education → more choices.D.Greater mobility → more choices → better education.2.According to the interview, which of the following details about the first poll isINCORRECT?A.Shorter work hours was least chosen for being most important.B.Choices for advancement might have been favored by young people.C.High income failed to come on top for being most important.D.Job security came second according to the poll results.3.According to the interviewee, which is the main difference between the first and the secondpoll?A.The type of respondents who were invited.B.The way in which the questions were designed.C.The content area of the questions.D.The number of poll questions.4.What can we learn from the respondents’ answers to items 2, 4, and 7 in the second poll?A.Recognition from colleagues should be given less importance.B.Workers are always willing and ready to learn more new skills.C.Psychological reward is more important than material one.D.Work will have to be made interesting to raise efficiency.5.According to the interviewee, which of the following can offer both psychological andmonetary benefits?A.Contact with many people.B.Chances for advancement.C.Appreciation from coworkers.D.Chances to learn new skills.SECTION C NEWS BROADCASTIn this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the best answer to each question on your answer sheet.Questions 6 and 7 are based on the following news. At the end of the news item, you will be given 20 seconds to answer the questions.Now listen to the news.6.According to the news item, “sleepboxes” are designed to solve the problems of _________.A.airportsB.passengersC.architectspanies7.Which of the following is NOT true with reference to the news?A.Sleepboxes can be rented for different lengths of the time.B.Renters of normal height can stand up inside.C.Bedding can be automatically changed.D.Renters can take a shower inside the box.Question 8 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question.Now listen to the news.8.What is the news item mainly about?A.London’s preparations for the Notting Hill Carnival.B.Main features of the Notting Hill Carnival.C.Police’s preventive measures for the carnival.D.Police participation in the carnival.Questions 9 and 10 are based on the following news. At the end of the news item, you will be given 20 seconds to answer the questions.Now listen to the news.9.The news item reports on a research finding about _________.A.the Dutch famine and the Dutch womenB.early malnutrition and heart healthC.the causes of death during the famineD.nutrition in childhood and adolescence10.When did the research team carry out the study?A.At the end of World War II.B.Between 1944 and 1945.C.In the 1950s.D.In 2007.PART II READING COMPREHENSION (30 MIN)In this section there are four reading passages followed by a total of 20 multiple-choice questions. Read the passages and then mark the best answer to each question on your answer sheet.TEXT AThree hundred years ago news travelled by word of mouth or letter, and circulated in taverns and coffee houses in the form of pamphlets and newsletters. “The coff ee houses particularly are very roomy for a free conversation, and for reading at an easier rate all manner of printed news,” noted one observer. Everything changed in 1833 when the first mass-audience newspaper, The New York Sun, pioneered the use of advertising to reduce the cost of news, thus giving advertisers access to a wider audience. The penny press, followed by radio and television, turned news from a two-way conversation into a one-way broadcast, with a relatively small number of firms controlling the media.Now, the news industry is returning to something closer to the coffee house. The internet is making news more participatory, social and diverse, reviving the distinctive characteristic of the era before the mass media. That will have profound effects on society and politics. In much of the world, the mass media are flourishing. Newspaper circulation rose globally by 6% between 2005 and 2009. But those global figures mask a sharp decline in readership in rich countries.Over the past decade, throughout the Western world, people have been giving up newspapers and TV news and keeping up with events in profoundly different ways. Most strikingly, ordinary people are increasingly involved in compiling, sharing, filtering, discussing and distributing news. Twitter lets people anywhere report what they are seeing. Classified documents are published in their thousands online. Mobile-phone footage of Arab uprisings and American tornadoes is posted on social-networking sites and shown on television newscasts. Social-networking sites help people find, discuss and share news with their friends.And it is not just readers who are challenging the media elite. Technology firms including Google, Facebook and Twitter have become important conduits of news. Celebrities and world leaders publish updates directly via social networks; many countries now make raw data available through “open government” initiatives. The internet lets people read newspapers or watch television channels from around the world. The web has allowed new providers of news, from individual bloggers to sites, to rise to prominence in a very short space of time. And it has madepossible entirely new approaches to journalism, such as that practiced by WikiLeaks, which provides an anonymous way for whistleblowers to publish documents. The news agenda is no longer controlled by a few press barons and state outlets.In principle, every liberal should celebrate this. A more participatory and social news environment, with a remarkable diversity and range of news sources, is a good thing. The transformation of the news business is unstoppable, and attempts to reverse it are doomed to failure. As producers of new journalism, individuals can be scrupulous with facts and transparent with their sources. As consumers, they can be general in their tastes and demanding in their standards. And although this transformation does raise concerns, there is much to celebrate in the noisy, diverse, vociferous, argumentative and stridently alive environment of the news business in the ages of the internet. The coffee house is back. Enjoy it.11.According to the passage, what initiated the transformation of coffee-house news tomass-media news?A.The emergence of big mass media firms.B.The popularity of radio and television.C.The appearance of advertising in newspapers.D.The increasing numbers of newspaper readers.12.Which of the following statements best supports “Now, the news industry is returning tosomething closer to the coffee house”?A.Newspaper circulation rose globally by 6% between 2005 and 2009.B.People in the Western world are giving up newspapers and TV news.C.Classified documents are published in their thousands online.D.More people are involved in finding, discussing and distributing news.13.According to the passage, which is NOT a role played by information technology?A.Challenging the traditional media.B.Planning the return to coffee-house news.C.Providing people with access to classified files.D.Giving ordinary people the chance to provide news.14.The author’s tone in the last paragraph towards new journalism is _________.A.optimistic and cautiousB.supportive and skepticalC.doubtful and reservedD.ambiguous and cautious15.In “The coffee house is back”, coffee house best symbolizes _________.A.the changing characteristics of news audienceB.the more diversified means of news distributionC.the participatory nature of newsD.the more varied sources of newsTEXT BParis is like pornography. You respond even if you don’t want to. You turn a corner and see a vista, and your imagination bolts away. Suddenly you are thinking about what it would be like tolive in Paris, and then you think about all the lives you have not lived. Sometimes, though, when you are lucky, you only think about how many pleasures the day ahead holds. Then, you feel privileged.The lobby of the hotel is decorated in red and gold. It gives off a whiff of 19th. century decadence. Probably as much as any hotel in Paris, this hotel is sexy. I was standing facing the revolving doors and the driveway beyond. A car with a woman in the back seat — a woman in a short skirt and black — leather jacket — pulled up before the hotel door. She swung off and she was wearing high heels. Normally, my mind would have leaped and imagined a story for this woman. Now it didn’t I stood there and told myself. Cheer up. You’re in Paris.In many ways, Paris is best visited in winter. The tourist crowds are at a minimum, and one is not being jammed off the narrow sidewalks along the Rue Dauphine. More than this. Paris is like many other European cities in that the season of blockbuster cultural events tends to begin in mid-to late fall and so, by the time of winter, most of the cultural treasures of the city are laid out to be admired.The other great reason why Paris in winter is so much better than Paris in spring and fall is that after the end of the August holidays and the return of chic Parisian women to their city, the restaurant-opening season truly begins hopping. By winter, many of the new restaurants have worked out their kinks(不足；困难) and, once the hype has died down, it is possible to see which restaurants are actually good and which are merely noisy and crowded.Most people are about as happy as they set their mind to being, Lincoln said. In Paris it doesn’t take much to be happy. Outside the hotel, the sky was pale and felt very high up. I walked the few blocks to the Seine and began running along the blue-green river toward the Eiffel Tower. The tower in the distance was black, and felt strange and beautiful the way that many things built for the joy of building do. As I ran toward it, because of its lattice structure, the tower seemed obviously delicate. Seeing it, I felt a sense of protectiveness.I think it was this moment of protectiveness that marked the change in my mood and my slowly becoming thrilled with being in Paris.During winter evenings, Paris’s streetlamps have a halo and resemble dandelions. In winter, when one leaves the Paris street and enters a cafe or restaurant, the light and temperature change suddenly and dramatically, there is the sense of having discovered something secret. In winter, because the days are short, there is an urgency to the choices one makes. There is the sense that life is short and so let us decide on what matters.16. According to the passage, once in Paris one might experience all the following feelings EXCEPT _________.A.regretB.condescensionC.expectationD.impulse17.Winter is the best season to visit Paris. Which of the following does NOT support thisstatement?A.Fashionable Parisian women return to Paris.B.More entertainment activities are staged.C.There are more good restaurants to choose from.D.There are fewer tourists in Paris.18.“Most people are about as happy as they set their mind to being.” This statement means thatmost people _________.A.expect to be happyB.hope to be as happy as othersC.would be happier if they wantedD.can be happy if they want19.In the eyes of the author, winter in Paris is significant because of _________.A.the atmosphere of its eveningsB.its implications for lifeC.the contrast it bringsD.the discovery one makes20.At the end of the passage, the author found himself in a mood of _________.A.excitementB.thoughtfulnessC.lonelinessD.joyfulnessTEXT CIf you want to know why Denmark is the world’s leader in wind power, start with a three-hour car trip from the capital Copenhagen — mind the bicyclists — to the small town of Lem on the far west coast of Jutland. You’ll feel it as you cross the 6.8 km-long Great Belt Bridge: Denmark’s bountiful wind, so fierce even on a calm summer’s day that it threatens to shove your car into the waves below. But wind itself is only part of the reason. In Lem, workers in factories the size of aircraft hangars build the wind turbines sold by Vestas, the Danish company that has emerged as the industry’s top manufacturer around the globe. The work is both gross and fine; employees weld together massive curved sheets of steel to make central shafts as tall as a 14-story building, and assemble engine housings (机器外罩) that hold some 18, 000 separate parts. Most impressive are the turbine’s blades, which scoop the wind with each sweeping revolution. As smooth as an Olympic swimsuit and honed to aerodynamic perfection, each blade weighs in at 7,000 kg, and they’re what help make Vestas’ turbines the best in the world. “The blade is where the secret is,” says Erik Therkelsen, a Vestas executive. “If we can make a turbine, it’s sold.”But technology, like the wind itself, is just one more part of the reason for Denmark’s dominance. In the end, it happened because Denmark had the political and public will to decide that it wanted to be a leader — and to follow through. Beginning in 1979, the government began a determined programme of subsidies and loan guarantees to build up its wind industry. Copenhagen covered 30% of investment costs, and guaranteed loans for large turbine exporters such as Vestas. It also mandated that utilities purchase wind energy at a preferential price — thus guaranteeing investors a customer base. Energy taxes were channeled into research centres, where engineers crafted designs that would eventually produce cutting-edge giants like Vestas’ 3-magawatt (MW) V90 turbine.As a result, wind turbines now dot Denmark. The country gets more than 19% of its electricity from the breeze (Spain and Portugal, the next highest countries, get about 10%) andDanish companies control one-third of the global wind market, earning billions in exports and creating a national champion from scratch. “They were out early in driving renewables, and that gave them the chance to be a technology leader and a job-creation leader,” says Jake Schmidt, international climate policy director for the New York City-based Natural Resources Defense Council. “They have always been one or two steps ahead of others.”The challenge now for Denmark is to help the rest of the world catch up. Beyond wind, the country (pop.5.5 million) is a world leader in energy efficiency, getting more GDP per watt than any other member of the E.U. Carbon emissions are down 13.3% from 1990 levels and total energy consumption has barely moved, even as Denmark’s economy continued to grow at a healthy clip. With Copenhagen set to host all-important U.N. climate change talks in December —where the world hopes for a successor to the expiring Kyoto Protocol — and the global recession beginning to hit environmental plans in capitals everywhere, Denmark’s example couldn’t be more timely.“We’ll try to make Denmark a showroom,” says Prime Minister Anders Fogh Rasmussen. “You can reduce energy use and carbon emissions, and achieve economic growth.”It’s tempting to assume that Denmark is innately green, with the kind of Scandinavian good conscience that has made it such a pleasant global citizen since, oh, the whole Viking thing. But the country’s policies were actually born from a different emotion, one now in common currency: fear. When the 1973 oil crisis hit, 90% of Denmark’s energy came from petroleum, almost all of it imported. Buffeted by the same supply shocks that hit the rest of the developed world, Denmark launched a rapid drive for energy conservation, to the point of introducing car-free Sundays and asking businesses to switch off lights during closing hours. Eventually the Mideast oil started flowing again, and the Danes themselves began enjoying the benefits of the petroleum and natural gas in their slice of the North Sea. It was enough to make them more than self-sufficient. But unlike most other countries, Denmark never forgot the lessons of l973, and kept driving for greater energy efficiency and a more diversified energy supply. The Danish parliament raised taxes on energy to encourage conservation and established subsidies and standards to support more efficient buildings. “It all started out without any regard for the climate or the environment,” says Svend Auken, the former head of Denmark’s opposition Social Democrat Party and the architect of the country’s environmental policies in the 1990s. “But today there’s a consensus that we need to build renewable power.”To the rest of the world, Denmark has the power of its example, showing that you can stay rich and grow green at the same time. “Denmark has proven that acting on climate can be a positive experience, not just painful,” says NRDC’s Schmidt. The re al pain could come from failing to follow in their footsteps.21.Which of the following is NOT cited as a main reason for Denmark’s world leadership inwind power?A.Technology.B.Wind.ernment drive.D.Geographical location.22.The author has detailed some of the efforts of the Danish Government in promoting the windindustry in order to show _________.A.the government’s determinationB.the country’s subsidy and loan policiesC.the importance of export to the countryD.the role of taxation to the economy23.What does the a uthor mean by “Denmark’s example couldn’t be more timely”?A.Denmark’s energy-saving efforts cannot be followed by other countries.B.Denmark can manufacture more wind turbines for other countries.C.Denmark’s energy-saving success offers the world a useful model.D.Denmark aims to show the world that it can develop even faster.24.According to the passage, Denmark’s energy-saving policies originated from _________.A.the country’s long tradition of environmental awarenessB.the country’s previous experience of oil shortageC.the country’s grave shortage of natural resourcesD.the country’s abundant wind resources25.Which of the following is NOT implied in the passage?A.Not to save energy could lead to serious consequences.B.Energy saving cannot go together with economic growth.C.Energy saving efforts can be painful but positive.D.Denmark is a powerful leader in the global wind market.TEXT DThe first clue came when I got my hair cut. The stylist offered not just usual coffee or tea but a complementary nail-polish change while I waited for my hair to dry. Maybe she hoped this little amenity would slow the growing inclination of women to stretch each haircut to last four months while nursing our hair back to whatever natural colour we long ago forgot.Then there was the appliance salesman who offered to carry my bags as we toured the microwave aisle. When I called my husband to ask him to check some specs online, the salesman offered a pre-emptive discount, lest the surfing turn up the same model cheaper in another store. That night, for the first time, I saw the Hyundai ad promising shoppers that if they buy a car and then lose their job in the next year, they can return it.Suddenly everything’s on sale. The upside to the economic downturn is the immense incentive it gives retailers to treat you like a queen for a day. During the flush times, salespeople were surly, waiters snobby. But now the customer rules, just for showing up. There’s more room to stretch out on the flight, even in a coach. The malls have that serene aura of undisturbed wilderness, with scarcely a shopper in sight. Every conversation with anyone selling anything is a pantomime of pain and bluff. Finger the scarf, then start to walk away, and its price floats silkily downward. When the mechanic calls to tell you that brakes and a timing belt and other services will run close to $2,000,it’s time to break out the newly perfected art of the considered pause. You really don’t even have to say anything pitiful before he’ll offer to knock a few hundred dollars off.Restaurants are also caught in a fit of ardent hospitality, especially around Wall Street. Trinity Place offers $3 drinks at happy hour any day the market goes down, with the slogan “Market tanked? Get tanked!” —which ensures a lively crowd for the clos ing bell. The “21” Club has decided that men no longer need to wear ties, so long as they bring their wallets. Food itself is friendlier: you notice more comfort food, a truce between chef and patron that is easier to enjoynow that you can get a table practically anywhere. New York Times restaurant critic Frank Bruni characterizes the new restaurant demeanor as “extreme solicitousness tinged with outright desperation.” “You need to hug the customer,” one owner told him.There’s a chance that eventually we’ll return all this kindness with the extravagant spending that was once decried but now everyone is hoping will restart the economy. But human nature is funny that way. In dangerous times, we clench and squint at the deal that looks too good to miss, suspecting that it must be too good to be true. Is the store with the supercheap flat screens going to go bust and thus not be there to honor the “free” extended warranty? Is there something wrong with that free cheese? Store owners will tell you horror stories about shoppers with attitude, who walk in demanding discounts and flaunt their new power at every turn. They wince as they sense bad habits forming: Will people expect discounts forever? Will their hard-won brand luster be forever cheapened, especially for items whose allure depends on their being ridiculously priced?There will surely come a day when things go back to “normal”; retail sales even inched up in January after sinking for the six months. But I wonder what it will take for us to see those $545 Sigerson Morrison studded toe-ring sandals as reasonable? Bargain-hunting can be addictive regardless of the state of the markets, and haggling is a low-risk, high-value contact sport. Trauma digs deep into habits, like my 85-year-old mother still calling her canned-goods cabinet “the bomb shelter.” The children of the First Depression were saving string and preaching sacrifice long after the skies cleared. They came to be called the “greatest generation.” As we learn to be decent stewards of our resources, who knows what might come of it? We have lived in an age of wanton waste, and there is value in practicing conservation that goes far beyond our own bottom line.26.According to the passage, what does “the first clue” suggest?A.Shops try all kinds of means to please customers.B.Shops, large or small, are offering big discounts.C.Women tend to have their hair cut less frequently.D.Customers refrain from buying things impulsively.27.Which of the following best depicts the retailers now?A.Bad-tempered.B.Highly motivated.C.Over-friendly.D.Deeply frustrated.28.What does the author mean by “the newly perfected art of the considered pause”?A.Customers now rush to buy things on sale.B.Customers have got a sense of superiority.C.Customers have learned how to bargain.D.Customers have higher demands for service.29.According to the passage, “shoppers...flaunt their new power at every turn” means thatshoppers would _________.A.keep asking for more discountsB.like to show that they are powerfulC.like to show off their wealthD.have more doubts or suspicion30.What is the author’s main message in the last two paragraphs?A.Extravagant spending would boost economic growth.B.One’s life experience would turn into lifelong habits.C.Customers should expect discounts for luxury goods.D.The practice of frugality is of great importance.PART III GENERAL KNOWLEDGE (10 MIN)There are ten multiple-choice questions in this section. Mark the best answer to each question on your answer sheet.31.The full official name of Australia is _________.A.The Republic of Australia.B.The Commonwealth of Australia.C.The Federation of Australia.D.The Union of Australia.32.Canada is well known for all the following EXCEPT _________.A.its mineral resourcesB.its forest resourcesC.its fertile and arable landD.its heavy industries33.In the United States community colleges offer _________.A.two-year programmesB.four-year programmesC.postgraduate studiesD. B.A. or B.S. degrees34.In _________, referenda in Scotland and Wales set up a Scottish parliament and a Walesassembly.A.2000B.1946C.1997D.199035.Which of the following clusters of words is an example of alliteration?A. A weak seal.B.Safe and sound.C.Knock and kick.D.Coat and boat.36.Who wrote Mrs. Warren’s Profession?A.John GalsworthyB.William Butler YeatsC.T.S. EliotD.George Bernard Shaw37.Sister Carrie by Theodore Dreiser is a(n) _________.A.novelB.short storyC.poem。
2013学年第一学期八年级英语竞赛试题（2013年12月）(满分150分，时间：120分钟)第一部分：知识运用（共两节；满分50分）第一节：单项填空。
（共30小题；每小题1分，满分30分）从A、B、C和D四个选项中，选出可以填入空白处的最佳选项。
1. Hangzhou is _______ most beautiful city, where you can see ________ famous West Lake.A. a; theB. a; /C. the; aD. /; the2. When she came back home, she found her little son in the corner of the room.A. cryB. criedC. cryingD. to cry3. — Jim, when shall we go to the park this weekend?— I really don’t mind. ______ Saturday ______ Sunday is OK.A. Both; andB. Neither; norC. Either; orD. Not; but4. _____ took his first step into _____ in 1961.A. Man; spaceB. The man; spaceC. Man; the spaceD. Men; a space5. The city is _________ it was ten years ago.A. three times as big asB. three times so larger thanC. as three times larger thanD. larger three times than6. Each of the foreigners holds a fork in one hand and a knife in .A. othersB. the othersC. the otherD. another7. Don’t worry. ________. I can do it myself.A. It’s wellB. Help yourselfC. That’s a piece of cakeD. It’s hard8. Li Lei realized ________ important for him to get up early to do some exercise.A. itB. thatC. oneD. this9. There is wrong with this computer. It works well.A. somethingB. everythingC. anythingD. nothing10. Tom is table. He is having lunch by himself.A. fromB. onC. atD. for11. I hope Tim can come to my birthday party. Then we ________ a much happier time.A. haveB. hadC. will haveD. have had12. The _______ shoes were very dirty, so I asked them to take them off before they went into______ house.A. boys’; John’sB. boys’; Johns’C. boy’s; Johns’D. boy’s; John’s13. What a surprise! It’s ______ time that I’ve met the beautiful girl this week.A. threeB. thirdC. the threeD. the third14. — Driving a car is so difficult for me!— Come on. The more you practice, the it will be.A. easyB. easierC. easilyD. more easily15. — A number of volunteers _________ willing to teach in China’s rural areas.— Yes, the number is getting _________.A is; bigger and bigger B. are; bigger and biggerC is; more and moreD are; more and more16. Every year a lot of tourists travel to the Dongqian Lake, because it’s _______ place.A. so a beautifulB. so beautifulC. so beautiful aD. a such beautiful17. When you are in trouble, remember to . Two heads are better than one.A. make a decisionB. make a choiceC. ask for helpD. give advice18. — _______ do you call your parents?— Very often, and each time, five minutes.A. WhenB. How longC. How manyD. How often19. — Is Mr Li at home?— No, he be in. He went to New York yesterday.A. mustn’tB. may notC. needn’tD. can’t20. Let’s go to the library after school, ?A. shall weB. shan’t weC. will youD. won’t you21. — The box is too heavy to carry. What’s in it?— Oh, it is books.A. filled withB. covered withC. used forD. asked for22. －Peter, the light in your room the whole night. What were you doing?－Oh, I was busy writing a report.A. turns onB. turned onC. is onD. was on23. — It’s too hot. What about having a glass of cold drink?—.A. Good ideaB. Me, tooC. That’s rightD. No problem24. — Would you like to go to the movie with me?— I’d love to, I’m afraid I have no time.A. soB. butC. andD. because25. — The camera doesn’t work. You’d better ask Mr Wang for help.— I , but he said he couldn’t fix it.A. wasB. askedC. willD. did26. — Julia, will you please go and move that desk?— ______A. How is it?B. How much?C. What for?D. What is it?27. ______ it is to jump into a river in summer!A. How funB. How funnyC. What great funD. What a great fun28. His friend Mary was kind ________ him. It was very kind _________ her to help him to readand write.A. to, forB. for, toC. with, ofD. to, of29. — It’s so cold today!— Yes. And the radio says there _______ this afternoon.A. is snowyB. is going to snowC. is going to have snowD. is going to be snow30. — Can I help you? — ___________.A. Yes, help meB. No, don’t help meC. Yes, I want to buy a dressD. That’s all right第二节：完形填空。
TEST FOR ENGLISH MAJORS (2013)GRADE EIGHTTIME LIMIT：195 MINPART I LISTENING COMPREHENSION (35 MIN)SECTION A MINI-LECTUREIn this section you will hear a mini-lecture．You will hear the lecture ONCE ONL Y. While listening, take notes on the important points．Your notes will not be marked, but you will need them to complete a gap-filling task after the mini-lecture．When the lecture is over, you will be given two minutes to check your notes, and another ten minutes to complete the gap-filling task on ANSWER SHEET ONE, using no more than three words in each gap．Make sure the word(s) you fill in is (are)both grammatically and semantically acceptable．You may refer to your notes while completing the task．Use the blank sheet for note-taking．Now, listen to the mini-lecture．What Do Active Learners Do?There are difference between active learning and passive learning.Characteristics of active learners:I. reading with purposesA. before reading: setting goalsB. while reading: (1) ________II. (2) ______ and critical in thinkingi.e. information processing, e.g.-- connections between the known and the new information-- identification of (3) ______ concepts-- judgment on the value of (4) _____.III. active in listeningA.ways of note-taking: (5) _______.B.before note-taking: listening and thinkingIV. being able to get assistanceA.reason 1: knowing comprehension problems because of (6) ______.B.Reason 2: being able to predict study difficultiesV. being able to question informationA. question what they read or hearB. evaluate and (7) ______.VI. Last characteristicA. attitude toward responsibility-- active learners: accept-- passive learners: (8) _______B. attitude toward (9) ______-- active learners: evaluate and change behaviour-- passive learners: no change in approachRelationship between skill and will: will is more important in (10) ______.Lack of will leads to difficulty in college learning.SECTION B INTERVIEWIn this section you will hear everything ONCE ONLY. Listen carefully and then answer thequestions that follow．Mark the best answer to each question on ANSWER SHEET TWO．Questions 1 to 5 are based on an interview．At the end of the interview you will be given 10 seconds to answer each of the following five questions．Now listen to the interview．1．According to the interviewer, which of the following best indicates the relationship between choice and mobility?A．Better educatio n →greater mobility →more choices．B．Better education →more choices →greater mobility．C．Greater mobility →better education →more choices．D．Greater mobility →more choices →better education．2．According to the interview，which of the following details about the first poll is INCORRECT? A．Shorter work hours was least chosen for being most important．B．Chances for advancement might have been favoured by young people．C．High income failed to come on top for being most important．D．Job security came second according to the poll results．3．According to the interviewee，which is the main difference between the first and the second poll?A．The type of respondents who were invited．B．The way in which the questions were designed．C．The content area of the questions．D．The number of poll questions．4．What can we learn from the respondents’answers to items 2，4 and 7 in the second poll? A．Recognition from colleagues should be given less importance．B．Workers are always willing and ready to learn more new skills．C．Psychological reward is more important than material one．D．Work will have to be made interesting to raise efficiency．5．According to the interviewee，which of the following can offer both psychological and monetary benefits?A．Contact with many people．B．Chances for advancement．C．Appreciation from coworkers．D．Chances to learn new skillsSECTION C NEWS BROADCASTIn this section you will hear everything ONCE ONLY．Listen carefully and then answer the questions that follow．Mark the best answer to each question on ANSWER SHEET TWO．Questions 6 and 7 are based on the following news, At the end of the news item, you will be given 20 seconds to answer the questions．Now listen to the news．6．According to the news item，“sleep boxes”are designed to solve the problems of A．airports．B．passengers．C．architects．D．companies．7．Which of the following is NOT true with reference to the news?A．Sleep boxes can be rented for different lengths of time．B．Renters of normal height can stand up inside．C．Bedding can be automatically changed．D．Renters can take a shower inside the box．Question 8 is based on the following news．At the end of the news item，you will be given 10 seconds to answer the question．Now listen to the news．8．What is the news item mainly about?A．London’S preparations for the Notting Hill Carnival．B．Main features of the Notting Hill Carnival．C．Police's preventive measures for the carnival．D．Police participation in the carnival．Questions 9 and 10 are based on the following news．At the end of the news item, you will be given 20 seconds to answer the questions．Now listen to the news．9．The news item reports on a research finding aboutA．the Dutch famine and the Dutch women．B．early malnutrition and heart health．C．the causes of death during the famine．D．nutrition in childhood and adolescence．10．When did the research team carry out the study?A．At the end of World War II．B．Between 1944 and 1945．C．In the 1950s．D．In 2007．PART II READING COMPREHENSION (30 MIN)In this section there are four reading passages followed by a total of 20 multiple-choice questions. Read the passages and then mark the best answer to each question on ANSWER SHEET TWO．TEXT AThree hundred years ago news travelled by word of mouth or 1etter, and circulated in taverns and coffee houses in the form of pamphlets and newsletters．“The coffee houses particularly are．very roomy for a free conversation，and for reading at an easier rate all manner of printed news，”noted one observer．Everything changed in 1833 when the first mass-audience newspaper, The New York Sun，pioneered the use of advertising to reduce the cost of news，thus giving advertisers access to a wider audience．The penny press，followed by radio and television，turned news from a two-way conversation into a one—way broadcast，with a relatively small number of firms controlling the media．Now, the news industry is returning to something closer to the coffee house．The internet is making news more participatory，social and diverse，reviving the discursive characteristics of" the era before the mass media．That will have profound effects on society and politics．In much of the world．the mass media are flourishing．Newspaper circulation rose globally by 6% between 2005 and 2009．But those global figures mask a sharp decline in readership in rich countries．Over the past decade，throughout the Western world，people have been giving up newspapers and TV news and keeping up with events in profoundly different ways．Most strikingly, ordinary people are increasingly involved in compiling，sharing，filtering，discussing and distributing news．Twitter lets people anywhere report what they are seeing．Classified documents are published in their thousands online．Mobile·phone footage of Arab uprisings and American tornadoes is posted on social-networking sites and shown on television newscasts．Social-networking sites help people find，discuss and share news with their friends．And it is not just readers who are challenging the media elite．Technology firms including Google，Facebook and Twitter have become important conduits of news．Celebrities and world leaders publish updates directly via social networks；many countries now make raw data available through“open government”initiatives．The internet lets people read newspapers or watchtelevision channels from around the world．The web has allowed new providers of news，from individual bloggers to sites，to rise to prominence in a very short space of time．And it has made possible entirely new approaches to journalism，such as that practiced by WikiLeaks，which provides an anonymous way for whistleblowers to publish documents．The news agenda is no longer controlled by a few press barons and state outlets．In principle，every liberal should celebrate this．A more participatory and social news environment，with a remarkable diversity and range of news sources，is a good thing．The transformation of the news business is unstoppable，and attempts to reverse it are doomed to failure．As producers of new journalism，individuals can be scrupulous with facts and transparent with their sources．As consumers，they can be general in their tastes and demanding in their standards．And although this transformation does raise concerns，there is much to celebrate in the noisy, diverse，vociferous，argumentative and stridently alive environment of the news business in the ages of the internet．The coffee house is back．Enjoy it．11．According to the passage，what initiated the transformation of coffee-house news to mass-media news?A．The emergence of big mass media firms．B．The popularity of radio and television．C．The appearance of advertising in newspapers．D．The increasing number of newspaper readers．12．Which of the following statements best supports“Now, the Hews industry is returning to something closer to the coffee house”?A Newspaper circulation rose globally by 6％between 2005 and 2009．B．People in the Western world are giving up newspapers and TV news．C．Classified documents are published in their thousands online．D．More people are involved in finding，discussing and distributing news．13．According to the passage，which is NOT a role played by information technology? A．Challenging the traditional media．B．Planning the return to coffee-house news．C．Providing people with access to classified files．D．Giving ordinary people the chance to provide news．14．The author’S tone in the last paragraph towards new journalism isA．optimistic and cautious．B．supportive and skeptical．C．doubtful and reserved．D．ambiguous and cautious．15．In“The coffee house is back”，coffee house best symbolizesA．the changing characteristics of news audience．B．the more diversified means of news distribution．C．the participatory nature of news．D. the more varied sources of news．TEXT BParis is like pornography．You respond even if you don’t want to．You turn a corner and see a vista，and your imagination bolts away。
2013英语专八真题参考答案解析(整理自网络)阅读理解11.the appearance of advertisement in newspaper.12.more people are involved in finding, discussing and distributing news13.planning the return to coffee-house news.14.optimistic and cautious15.the participator nature of news.阅读理解第二篇16. regret17. more resturants to choose from18. can be happy if they want19. its implications for life20. thoughtfulness阅读理解第三篇21. Geographic location22. the government’s determination23. denmark’s energy-saving success offers the world a useful model24. the country’s previous experience of oil shortage25. energy saving cannot go together with economic growth.阅读第四篇26. shops try all kinds of means to please customers27. over-friendly28. customers have got a sense of superiority29. keep asking for more discounts30. the practice of frugality is of great importance人文知识31. 澳大利亚的全称是：the commonwealth of Austrilia32. 加拿大以什么著称，除了什么以外（矿产、森林、肥沃的土地）。
amc8 逻辑推理题
AMC8（American Math Competition 8）中的逻辑推理题是数学竞赛中的一种题型，通常涉及到逻辑推理、推理分析和问题解决能力等方面的考察。
以下是一个AMC8逻辑推理题的示例：
题目：有五顶不同的帽子，两顶蓝色的，三顶红色的。
甲、乙、丙、丁、戊五人站成一排，已知甲看到的三个人中戴蓝帽子的人是乙、丙、丁，乙看到的三个人中戴蓝帽子的人是甲、丙、丁，丙看到的三个人中戴蓝帽子的人是甲、乙、丁，丁看到的三个人中戴蓝帽子的人是甲、乙、丙。
戊说：“我看到的三个人都戴红帽子。
”根据以上信息，戊看到的三个人分别是谁？
解答：根据题目描述，甲、乙、丙、丁都看到了三个人戴蓝帽子，这意味着他们四人都看到了彼此。
如果甲或乙看到的另外两个人戴红帽子，那么他们看到的另外两个人必然是甲和乙本身。
同理，丙和丁也是如此。
由于他们看到的另外三个人都是戴蓝帽子的人，所以戊只能看到甲、乙、丙三个人，而甲、乙、丙都能看到戊。
因此，戊看到的另外两个人是甲和乙。
综上所述，戊看到的另外三个人分别是甲、乙和丙。
免费2013专八真题及答案TEST FOR ENGLISH MAJORS (2013)GRADE EIGHTTIME LIMIT：195 MINPART I LISTENING COMPREHENSION (35 MIN)SECTION A MINI-LECTUREIn this section you will hear a mini-lecture．You will hear the lecture ONCE ONL Y. While listening, take notes on the important points．Your notes will not be marked, but you will need them to complete a gap-filling task after the mini-lecture．When the lecture is over, you will be given two minutes to check your notes, and another ten minutes to complete the gap-filling task on ANSWER SHEET ONE, using no more than three words in each gap．Make sure the word(s) you fill in is (are)both grammatically and semantically acceptable．You may refer to your notes while completing the task．Use the blank sheet for note-taking．Now, listen to the mini-lecture．What Do Active Learners Do?There are difference between active learning and passive learning.Characteristics of active learners:I. reading with purposesA. before reading: setting goalsB. while reading: (1) ________II. (2) ______ and critical in thinkingi.e. information processing, e.g.-- connections between the known and the new information-- identification of (3) ______ concepts-- judgment on the value of (4) _____.III. active in listeningA.ways of note-taking: (5) _______.B.before note-taking: listening and thinkingIV. being able to get assistanceA.reason 1: knowing comprehension problems because of (6) ______.B.Reason 2: being able to predict study difficultiesV. being able to question informationA. question what they read or hearB. evaluate and (7) ______.VI. Last characteristicA. attitude toward responsibility-- active learners: accept-- passive learners: (8) _______B. attitude toward (9) ______-- active learners: evaluate and change behaviour-- passive learners: no change in approachRelationship between skill and will: will is more important in (10) ______.Lack of will leads to difficulty in college learning.SECTION B INTERVIEWIn this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow．Mark the best answer to each question on ANSWER SHEET TWO．Questions 1 to 5 are based on an interview．At the end of the interview you will be given 10 seconds to answer each of the following five questions．Now listen to the interview．1．According to the interviewer, which of the following best indicates the relationship between choice and mobility?A．Better educatio n →greater mobility →more choices．B．Better education →more choices →greater mobility．C．Greater mobility →better education →more choices．D．Greater mobility →more choices →better education．2．According to the interview，which of the following details about the first poll is INCORRECT? A．Shorter work hours was least chosen for being most important．B．Chances for advancement might have been favoured by young people．C．High income failed to come on top for being most important．D．Job security came second according to the poll results．3．According to the interviewee，which is the main difference between the first and the second poll?A．The type of respondents who were invited．B．The way in which the questions were designed．C．The content area of the questions．D．The number of poll questions．4．What can we learn from the respondents’answers to items 2，4 and 7 in the second poll? A．Recognition from colleagues should be given less importance．B．Workers are always willing and ready to learn more new skills．C．Psychological reward is more important than material one．D．Work will have to be made interesting to raise efficiency．5．According to the interviewee，which of the following can offer both psychological and monetary benefits?A．Contact with many people．B．Chances for advancement．C．Appreciation from coworkers．D．Chances to learn new skillsSECTION C NEWS BROADCASTIn this section you will hear everything ONCE ONLY．Listen carefully and then answer the questions that follow．Mark the best answer to each question on ANSWER SHEET TWO．Questions 6 and 7 are based on the following news, At the end of the news item, you will be given 20 seconds to answer the questions．Now listen to the news．6．According to the news item，“sleep boxes”are designed to solve the problems of A．airports．B．passengers．C．architects．D．companies．7．Which of the following is NOT true with reference to the news?A．Sleep boxes can be rented for different lengths of time．B．Renters of normal height can stand up inside．C．Bedding can be automatically changed．D．Renters can take a shower inside the box．Question 8 is based on the following news．At the end of the news item，you will be given 10 seconds to answer the question．Now listen to the news．8．What is the news item mainly about?A．London’S preparations for the Notting Hill Carnival．B．Main features of the Notting Hill Carnival．C．Police's preventive measures for the carnival．D．Police participation in the carnival．Questions 9 and 10 are based on the following news．At the end of the news item, you will be given 20 seconds to answer the questions．Now listen to the news．9．The news item reports on a research finding aboutA．the Dutch famine and the Dutch women．B．early malnutrition and heart health．C．the causes of death during the famine．D．nutrition in childhood and adolescence．10．When did the research team carry out the study?A．At the end of World War II．B．Between 1944 and 1945．C．In the 1950s．D．In 2007．PART II READING COMPREHENSION (30 MIN)In this section there are four reading passages followed by a total of 20 multiple-choice questions. Read the passages and then mark the best answer to each question on ANSWER SHEET TWO．TEXT AThree hundred years ago news travelled by word of mouth or 1etter, and circulated in taverns and coffee houses in the form of pamphlets and newsletters．“The coffee houses particularly are．very roomy for a free conversation，and for reading at an easier rate all manner of printed news，”noted one observer．Everything changed in 1833 when the first mass-audience newspaper, The New York Sun，pioneered the use of advertising to reduce the cost of news，thus giving advertisers access to a wider audience．The penny press，followed by radio and television，turned news from a two-way conversation into a one—way broadcast，with a relatively small number of firms controlling the media．Now, the news industry is returning to something closer to the coffee house．The internet is making news more participatory，social and diverse，reviving the discursive characteristics of" the era before the mass media．That will have profound effects on society and politics．In much of the world．the mass media are flourishing．Newspaper circulation rose globally by 6% between 2005 and 2009．But those global figures mask a sharp decline in readership in rich countries．Over the past decade，throughout the Western world，people have been giving up newspapers and TV news and keeping up with events in profoundly different ways．Most strikingly, ordinary people are increasingly involved in compiling，sharing，filtering，discussing and distributing news．Twitter lets people anywhere report what they are seeing．Classified documents are published in their thousands online．Mobile·phone footage of Arab uprisings and American tornadoes is posted on social-networking sites and shown on television newscasts．Social-networking sites help people find，discuss and share news with their friends．And it is not just readers who are challenging the media elite．Technology firms including Google，Facebook and Twitter have become important conduits of news．Celebrities and world leaders publish updates directly via social networks；many countries now make raw data availablethrough“open government”initiatives．The internet lets people read newspapers or watch television channels from around the world．The web has allowed new providers of news，from individual bloggers to sites，to rise to prominence in a very short space of time．And it has made possible entirely new approaches to journalism，such as that practiced by WikiLeaks，which provides an anonymous way for whistleblowers to publish documents．The news agenda is no longer controlled by a few press barons and state outlets．In principle，every liberal should celebrate this．A more participatory and social news environment，with a remarkable diversity and range of news sources，is a good thing．The transformation of the news business is unstoppable，and attempts to reverse it are doomed to failure．As producers of new journalism，individuals can be scrupulous with facts and transparent with their sources．As consumers，they can be general in their tastes and demanding in their standards．And although this transformation does raise concerns，there is much to celebrate in the noisy, diverse，vociferous，argumentative and stridently alive environment of the news business in the ages of the internet．The coffee house is back．Enjoy it．11．According to the passage，what initiated the transformation of coffee-house news to mass-media news?A．The emergence of big mass media firms．B．The popularity of radio and television．C．The appearance of advertising in newspapers．D．The increasing number of newspaper readers．12．Which of the following statements best supports“Now, the Hews industry is returning to something closer to the coffee house”?A Newspaper circulation rose globally by 6％between 2005 and 2009．B．People in the Western world are giving up newspapers and TV news．C．Classified documents are published in their thousands online．D．More people are involved in finding，discussing and distributing news．13．According to the passage，which is NOT a role played by information technology? A．Challenging the traditional media．B．Planning the return to coffee-house news．C．Providing people with access to classified files．D．Giving ordinary people the chance to provide news．14．The author’S tone in the last paragraph towards new journalism isA．optimistic and cautious．B．supportive and skeptical．C．doubtful and reserved．D．ambiguous and cautious．15．In“The coffee house is back”，coffee house best symbolizesA．the changing characteristics of news audience．B．the more diversified means of news distribution．C．the participatory nature of news．D. the more varied sources of news．TEXT BParis is like pornography．You respond even if you don’t want to．You turn a corner and see a vista，and your imagination bolts away。
