当前位置:文档之家› 重庆市巴蜀中学2015届高三下学期第二次模拟考试英语试题 Word版含答案

重庆市巴蜀中学2015届高三下学期第二次模拟考试英语试题 Word版含答案

重庆市巴蜀中学2015届高三下学期第二次模拟考试英语试题 Word版含答案
重庆市巴蜀中学2015届高三下学期第二次模拟考试英语试题 Word版含答案

重庆市巴蜀中学2015届高三下学期第二次模拟考试英语试题

‘1. —I’m planning to go to Kingdom of Cambodia this summer vacation. I think the trip will be exciting.

—____, as it’s the rainy season then.

A. Yes, it will

B. Of course not

C. You can say so

D. It’s hard to say

2. –-Why are you so crazy about music?

–- Because I can always find in music _____ peace that is missing in _____ world full of challenges.

A. the; a

B. the;/

C. /; a

D. /; the

3. —How did you make contact with the travel agent, Susan?

—Oh, that’s easy. I surfed the Internet and then called one _____ the telephone number is provided.

A. that

B. in which

C. of which

D. whose

4. The first time I ____ Todd, he ____ to some students at the English corner.

A. had seen; was talked

B. saw; talked

C. had seen; talked

D. saw; was talking

5. It’s an art to be parents. With children, if you say ―no‖, you have to mean_____.

A. that

B. this

C. it

D. one

6. _____ he is enthusiastic and qualified for the job, I see no reason to remove him from office.

A. Provided that

B.Even though

C. Unless

D. As if

7. _____, everyone present was amused by his adventure story in Africa.

A. Absurd as might it sound

B. As it might sound absurd

C. As absurd it might sound

D. Absurd as it might sound

8. —It is a mystery and a shock to all who knew him that he____ have taken his own life in this way. —What a pity, indeed.

A. must

B. may

C. can

D. should

9. With many cities in China dreadfully blanketed by thick haze, the environment problem is _____

Chinese people concern most nowadays.

A. what

B. which

C. where

D. when

10. —Do you know ____ made him successful in his career?

—Yes. His hard work and determination, of course.

A. what it was that

B. what was it that

C. it was what that

D. was it what that

11. What a great weight she felt _____ off her mind the moment she heard she had been admitted to

a key university.

A. take

B. to take

C. taking

D. taken

12. We shall not start the project until it ____ by the committee.

A. will be approved

B. approves

C. has been approved

D. is to approve

13. —I like this dress better than that one.

— ____, but it costs almost twice____.

A. So do I; as much

B. Neither do I; as many

C. So I am; so much

D. Neither am I; so many

14. The doctor tried to laugh my brother ____ his fears about the coming operation.

A. from

B. against

C. off

D. into

15. Don't sigh over the small achievement. _____, and I'm sure if you keep at it, you'll see the light

at the end of the tunnel!

A. Lookers-on see most of the game

B. Constant dripping wears away the stone

C. The world is your oyster

D. Lost time is never found again

二、完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从16-35各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

A

My grandma is good at gardening. She could make anything bloom(开花). __16__ me. In my eyes, she was inspiring and __17__. For most of her life, she lived on a farm, where she brought up four children, and buried my grandpa.

I visited her on weekends. After the gardening work, I was __18__ to climb the mountain, singing songs and gathering flowers. Sometimes the plants scratched me. She would say, "Beauty has a __19__. I hope it was worth it."

"Yes, ma' ma," I'd say. "__20__ was."

I loved gathering flowers on my own. But what I loved best was gathering them with her. Even then, as a child, I knew what I wanted most from my grandma was not her flowers, but her __21__. She's been gone for years, but sometimes, when I __22__down to pick a flower or pull a weed, I see her __23__, not mine.

I thought I'd grow up to be a gardener too. I told myself, someday my children had children, I'd be a gardening grandma. Then the grandbabies started showing up, and I discovered 1'd much rather run after them __24__ go digging. Actually I'm no gardener. I'm a __25__, not a planter. I differ from my grandma in lots of ways, but this: I will always carry __26__ me a heart she made from her own.

I needn’t plant a garden. My children are my flowers. They delight and complete me with a beauty that is worth any price. All I need to do is __27__ them with time, water them with love, and hope that someday, when they hold their first grandchild, they might see my hand.

16. A. Not B. Even C. Only D. Often

17. A. famous B. humorous C. caring D. amusing

18. A. determined B. anxious C. curious D. free

19. A. standard B. range C. price D. quality

20. A. It B. I C. She D. That

21. A. possession B. promise C. beauty D. time

22. A. climb B. reach C. look D. sit

23. A. smile B. spirit C. soul D. hand

24. A. than B. until C. unless D. since

25. A. worker B. teacher C. picker D. farmer

26. A.to B. within C. beyond D. for

27. A. attend B. miss C. promote D. influence

B

The journey of water on the earth can be a mirror of our own paths through life. Like a river that flows within the boundaries of its banks, we are born with certain characteristics that _ 28__ our

identity. We move through life, __29__ many twists, turns, and barriers along the way just as a river does.

Water shows us how to move through the world with grace, bravery, determination, and __30__. Water is brave and does not waste time sticking to its past, but flows onward without looking back. When there is a hole to be filled, water does not run away from it in fear of the dark; _ 31 _, water modestly and bravely fills the empty space. Similarly, we can face the dark moments of our life rather than run away from them.

_32 _, a river will empty into the sea. Water does not hold back from joining up with a larger body, nor does it fear a loss of _ 33__ or control. It gracefully and modestly falls into the vastness by contributing its energy without hesitation. Each time we move __34__ our personal characters to become part of something bigger, we can try our best to _ 35__ the lead of the river.

28. A. preserve B.assume C. decide D. cast

29. A. competing with B. meeting with C. living with D. playing with

30. A. modesty B. happiness C. honesty D. reputation

31. A. therefore B. besides C. otherwise D. instead

32. A. Eventually B. Absolutely C. Regularly D. Actually

33. A. life B. confidence C. liberty D. root

34. A. on B. into C. across D. beyond

35. A. take B. follow C. lose D. hold

三、阅读理解(共20小题;每小题2分,满分40分)

阅读下列短文,从每小题所给的四个选项(A、B、C、D)中,选出最佳答案,并在答题卡上将该项涂黑。

A

When Dekalb Walcott III was just 8 years old, his father, a Chicago fire chief, let him tag along on a call. Dekalb says a lot of kids idolized basketball player Michael Jordan when he was growing up in Chicago in the 1990s. Not him.

"I wanted to be like Dekalb Walcott Jr.," he says of his father.

So when his dad asked if he wanted to go on that call with him when he was 8, Dekalb was excited. "I'm jumping up and down, saying, 'Mom, can I go? Can I go?'"

The experience changed Dekalb's life, he tells his dad on a visit to Story Corps. "My eyes got big from the moment the alarm went off." the younger Dekalb says. "This is the life that I want to live someday."

Now 27, the younger Dekalb is living that life. He became a firefighter at 21 and went to work alongside his dad at the Chicago Fire Department. Before his father retired, the pair even went out on a call together—father supervising(监督)son.

"You know, it's everything for me to watch you grow," his father says. But he also recalls worrying about one particular fire that his son faced."

I received a phone call that night. And they said, 'Well, your son was at this fire.' I said, 'OK, which way is this conversation going to go? '" Dekalb Walcott Jr. recalls.

"And they said, 'But he's OK. And he put it out all by himself. Everybody here was proud of him.'

And the word went around, 'Who was out there managing that fire? Oh, that's Walcott! That's Walcott up there!' So, you know, moments like that, it's heaven on Earth for a dad."

Dekalb Walcott Jr. retired in 2009. The younger Dekalb says he's proud of being a second-generation firefighter. "You know, it makes me look forward to fatherhood as well, because I'm definitely looking forward to passing that torch down to my son."

36. The underlined phrase tag along in Paragraph 1 is closest in meaning to ______.

A. put out fire

B. watch basketball

C. follow his father

D. ask his mother’s permission

37. Dekalb Walcott III determined to become a firefighter at the age of _________.

A. 27

B. 21

C. 8

D. 35

38. What can we learn from the last paragraph?

A. Dekalb Walcott III wants his son to become a firefighter too.

B. Dekalb Walcott Jr. is proud to be a second-generation firefighter.

C. Dekalb Walcott Jr. wants to pass the torch to Dekalb Walcott III.

D. Dekalb Walcott III is proud that his son has become an excellent firefighter.

39. Which of the following is the best title of the passage?

A. Putting Out Fire: A Challenging Job for Father and son

B. Passing The Torch: A Firefighter Dad's Legacy

C. Dekalb Walcott III: A Second-generation Firefighter

D. Dekalb Walcott Jr.: A Chicago Fire Chief

B

How do you celebrate New Year’s D ay? If I had to take a guess, you probably celebrate New Year’s Day surrounded by family and friends, enjoying drinks of your choice (probably wine and champagne) and watching the ball drop. If you’re particularly lucky, perhaps you share a kiss with that special someone when the clock hits 00:00am. Have you ever imagined how New Year’s Day would look in another country? Listed below are five of the top ten ―Unique New Year Traditions from Around the World.‖

1. Breaking Dishes on Neighbor’s Door——Denmark

A strange and weird Danish New Year tradition, depending on how you look at it, is throwing dishes at neighbor’s door. Strangely, this makes them happy instead of annoying them. The family with the tallest tower of broken plates, glasses, cups and other crockery is considered to be the luckiest person because it symbolizes their large amount of loyal friends.

2. Talking to Spirits——Mexico

Talking to spirits is a part of Mexican belief. Mexicans strongly believe that they can communicate with the souls of thei r dead loved ones. New Year’s Eve is considered the best time to communicate with dead spirits to convey a message or ask for guidance. And this is not done at home on an individual basis but is a legal Mexican practice. Taos Inn, in New Mexico for example, offers 15 minutes session of spiritualism and meditation(默念) for $15. Not a bad price for some helpful guidance!

3. Wearing Polka Dots ——Philippines

Imagine streets full of people wearing polka dots and dining room tables full of round shaped food and fruits on one single day of the year. This all actually happens in the Philippines on New Year’s Eve every year. Philippines believe that this will bring them prosperity by associating the round dots to coins and wealth.

4. Burning Scarecrow(稻草人) Dummy——Ecuador

Ecuador has a unique custom of crafting scarecrows and then burning them at midnight. They adorn them and fill the scarecrows with newspapers and pieces of wood. As midnight approaches,

everyone gathers outside their home and each family burns their own scarecrow. The tradition says that this destroys all the bad things that took place in the past 12 months. The scarecrow also scares away bad luck, which in turn, fills their new year with luck and happiness.

5. Mistletoe(槲寄生) Leaves Are Placed Under Pillow to Find Husband——Ireland

The single women of Ireland wait desperately for New Year’s Eve because it is the night that can bring them the love of their lives. They place mistletoe leaves under their pillow hoping to catch their future husband. It is also believed in the Irish culture that this act will help them get rid of bad luck.

The world is a large and very different place. Yes, people of all nations may celebrate New Year’s much differently around th e world, with different traditions, but there are a lot of general themes to be seen. We all want to start a new, fresh year with renewed enthusiasm and hope no matter what happened during the past year. We all want to be happier, find love, renew friendships increase our wealth and also hope for a little extra luck in the coming New Year.

40. When New Year’s Day is coming, people always celebrate it in many ways EXCEPT __________.

A. sharing the time with their lovers

B. getting together with their families

C. enjoying drinks with their friends

D. setting the ball drop

41. What can you learn when you are paying a visiting to Mexico during New Year’s Day?

A. You’d better talk to your ancestors just at home secretly, or you’ll break the law.

B. It’s New Year’s Day that Mexicans consider the best time to talk to spirits.

C. It’s commonly believed that the dead have spirits and souls living around.

D. You can ask for help free when you want to talk to the dead.

42. The single women of Ireland always ________ hoping to catch their future husband on New Year’s Eve.

A. wear polka dots

B. burn scarecrow dummy

C. break dishes on neighbor’s door

D. place mistletoe leaves under their pillow

C

NEWS BRIEF

●"New labels to show calories

The US government ruled that all food establishments(场所) should put the calorie information of their foods on their menus. Within a year chain restaurants, like fast food KFC, will have to say clearly on their menus how many calories their fried chicken wings, fries, and other items contain. Amusement parks, movie theaters and supermarkets will also have to follow the rules. The move is designed to fight against the problem of obesity(肥胖) in the US.

●Antibiotics leading to world problem

The entire world is facing this problem; antibiotic resistance. And the resistance will lead to the deaths of 10 million people across the world by 2025, predicted a new report released by the UK government. Antibiotics are used to destroy or slow the growth of harmful bacteria in our bodies. But overuse and misuse of them can encourage bacteria to develop new ways of overcoming antibiotics, which makes it increasingly difficult for humans to fight diseases.

●___________________________________

Australia is the world's most expensive destination for international students, according to a study done by Hong Kong and Shanghai Banking Corporation (HSBC). They have to spend an average of $ 42,000 ( about 258 ,000 yuan) a year to study at Australian universities. Singapore is not far behind, with an average yearly cost of $ 39,229, followed by the US at $ 36,564 and the UK at 35,045. However, Australia's education quality only ranks joint fourth with Canada, well below the US, the UK, and Germany. In addition, international students studying in Germany only have to

pay about one-sixth the cost of studying in Australia.

●New Games sports may be added

The International Olympic Committee has canceled the 28-sportcap for future summer Olympics But each summer Games will still only be allowed 10, 500 athletes and 310 events. Countries that could host the games will discuss plans with the committee during a new invitation stage before bidding. They are also allowed to hold events outside their own countries and get financial support from the committee. No changes will be introduced for the 2016 Olympics in Rio de Janeiro, Brazil.

43. The news brief covers ______________.

A. medicine, disaster, finance, events

B. health, medicine, education, sports

C.service, health, education, events

D. business, medicine, economy, sports

44. The underlined word "antibiotics" in Line 7 refers to ___________.

A. serious diseases

B. varieties of resistance

D. harmful bacteria C. medical drugs

45. Which of the following fits in the blank best in the news brief?

A. Australian study most expensive

B. The cost of studying overseas

C. International students in Australia

D. Australia's education quality

46. Which of the following statements is best supported by the news brief?

A. Some events may be held outside the host country in future summer Olympics

B. It is Australia's best education quality that will cause students to make a wise choice.

C. It is necessary for the UK government to try hard to encourage using lots of antibiotics.

D. Popcorn sold in cinemas in the world will soon have calorie information labels.

D

When my friend put out the idea of homeschooling to her parents, the first reaction they gave was, ―You are cutting the child off the world.‖ Did the child really get cut off or did the child socialize better?

The moment we hear of homeschooling, we think the child will have no opportunities to interact with peers. However, in my friend’s opinion, we forget that when attending a regular school, the child is not into socializing all the while. The child is confined to so many other activities. Studies take a major role in a child’s life. The child hardly has the time to interact at school.

The child might be meeting and studying along with many peers; however, how many kids interact with all the kids in a class? But in homeschooling system, as my friend mentioned, the kid has all the time and can plan his day accordingly. During the day the child studies just like other school-going kids but with no burden of homework and project work, the child has so much free time in the evening as to effectively interact and play with peers. The quality time the child spends in education is really impressive.

Homeschooled kids have the opportunity to socialize more often as they have a lot of time in their hands. They can also make socializing a regular habit. Just as my friend said, her child goes to a neighboring park almost every day and has a set of friends who go there daily. Other children get back home to finish off homework and project work whereas her child who is already through with studies gets the opportunity to spend time with family members.

When I heard this, I really felt how lucky the child was. Definitely the child had a better opportunity to socialize when compares with my kids. However, I might not consider homeschooling for my kid, as I am so used to the traditional schooling system and feel regular schooling the safest bet.

47. What is the author’s attitude towards his friend’s idea of homeschooling?

A. Surprised.

B. Interested.

C. Negative.

D. Confident.

48. The author’s purpose in writing the passage is to _________.

A. explain what homeschooling is.

B. express his views on homeschooling.

C. share his ways of teaching his children.

D. promote homeschooling.

49. The underlined word ―confined‖ in the Para.2 can be replaced by _______.

A. free

B. restricted

C. devoted

D. accustomed

50. According to the author what is the biggest advantage of homeschooling children?

A. They can be better at socializing.

B. They can be more popular.

C. They will become braver.

D. They can study better.

51. How does the passage mainly develop?

A. By following the order of importance.

B. By following the order of time

C. By presenting facts.

D. By making comparison.

E

Want Kids to Eat Better? Get Them Cooking

Cooking programs and classes for children seem to positively influence children's food preferences and behaviors, according to a recent review. And, although the review didn't look at long-term effects of such programs, the findings suggest that such programs might help children develop long-lasting healthy habits.

This research comes at a time when childhood obesity(肥胖)rates have been rising rapidly. More than one-third of adolescents in the United States were obese in 2012, according to the U.S. Centers for Disease Control and Prevention (CDC). This trend has been caused, at least in part, by a significant decrease in the amount of meals that people consume at home since the 1980s, according to background information in the study.

Cooking education programs, such as Food Explorers, teach children about new healthy foods and how to prepare them. They also stress the importance of eating five fruits and vegetables every day. A volunteer parent explains a new food to the group, and the kids make something based on the lesson, such as fruit or vegetable salad. Depending on the program, kids may be sent home with information about healthy foods to bring to their parents, the review explained.

The study team reviewed eight other studies that tested different types of cooking education programs. Children in these classes were between 5 and 12 years old, according to the review. The goal of the study team was to learn more about developing an efficient program to encourage healthy food choices that last a lifetime. The study found that it is particularly important to expose kids to healthy foods on a number of occasions. This makes them feel comfortable with the new foods, which helps them build healthy habits.

The study stressed the importance of getting parents involved in(参与)their children's eating habits. Parents who are unable to enroll their kids in a cooking class can achieve similar benefits by having their kids help them while they prepare meals at home. Children are more comfortable at home, which makes them more receptive to new foods because they will make the connection to a positive experience.

52. What can we infer from the second paragraph?

A. Eating out frequently causes obesity.

B. Childhood obesity is totally caused by eating habit.

C. Childhood obesity rates have been rising rapidly since 2012

D. Food consumption has decreased significantly since the 1980s.

53. On cooking education programs, ________.

A. children learn how to prepare foods from their parents

B. children will learn how to cook in the company of their parents

C. children may learn information unknown to their parents

D. children focus more on cooking skills than on information about healthy foods

54. Which of the following is true according to the study?

A. Parents should let their kids cook independently at home.

B. A greater willingness to try new foods helps building healthy habits.

C. Children who participate in cooking programs are less likely to become obese.

D. Children who take cooking courses are more likely to choose fruits and vegetables as adults.

55. Which of the following categories does this passage belong to?

A. Education Systems

B. Science and Technology

C. Parent-child Relationship

D. Public Health Research

四.写作(共两个写作任务,满分35分)

写作一(满分15分)

Dozens of old people gather in public parks and squares early in the morning and night, turn on the loudspeakers and dance to the music, which has been controversial(引起争议的) because of the noise pollution it creates. Guangzhou is the first city in China to have drafted a rule on the creation of silent zones in areas of parks that are close to schools, hospitals, offices and residential quarters. 请就此内容写一篇短文并发表自己的看法。

要求:

(1) 就此材料发表你的感想;

(2) 应紧扣材料、有明确观点;

(3) 词数不少于60字

(4) 在答题卡上作答。

_________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ __________________

写作二(满分20分)

假如你是高中三年级的学生李华,你在学校组织了一项“有烦恼向谁说”的调查活动。

请用英语给校报编辑写一封信,反映相关情况。内容包括:调查结果(如下图所示)、持相应想法的理由及你对调查结果的看法。

注意:1.信的开头和结尾已经给出,但不计人总词数

2.词数为80左右。

Dear Editor,

I am a Senior Three student. Recently we have carried out a survey---"To whom do you go when in trouble?" The results are as follows.

Yours sincerely,

Li Hua

写作二:

Reference version:

Dear Editor,

I am a Senior Three student. Recently we have carried out a survey---―To whom do you go when in trouble?‖ The results are as follows.

61% of the students surveyed select friends or schoolmates as their ideal listeners when they have troubles, the reason of which is that they are in the same age group and have a better understanding of each other. Another 22% choose teachers and parents to talk to. They suggest that teachers and parents are rich in life and educational experience. Nevertheless, there are also 17% who don’t share their troubles at all. They say that their troubles are none of others’ business. They find it hard to get along with others.

It is not easy to reach definite conclusions based on such a survey example. However, some general comments can be made. It seems clear from the response that some students lack communication with others and teachers and parents need to play a more important role in their lives.

Yours sincerely,

Li Hua

重庆重庆市巴蜀中学校物理 静电场及其应用精选测试卷

一、第九章 静电场及其应用选择题易错题培优(难) 1.如图所示,带电量为Q 的正点电荷固定在倾角为30°的光滑绝缘斜面底端C 点,斜面上有A 、B 、D 三点,A 和C 相距为L ,B 为AC 中点,D 为A 、B 的中点。现将一带电小球从A 点由静止释放,当带电小球运动到B 点时速度恰好为零。已知重力加速度为g ,带电小球在A 点处的加速度大小为 4 g ,静电力常量为k 。则( ) A .小球从A 到 B 的过程中,速度最大的位置在D 点 B .小球运动到B 点时的加速度大小为 2 g C .BD 之间的电势差U BD 大于DA 之间的电势差U DA D .AB 之间的电势差U AB =kQ L 【答案】BC 【解析】 【分析】 【详解】 A .带电小球在A 点时,有 2 sin A Qq mg k ma L θ-= 当小球速度最大时,加速度为零,有 '2 sin 0Qq mg θk L -= 联立上式解得 '2L L = 所以速度最大的位置不在中点D 位置,A 错误; B .带电小球在A 点时,有 2 sin A Qq mg k ma L θ-= 带电小球在B 点时,有 2sin 2 B Qq k mg θma L -=() 联立上式解得

2 B g a = B 正确; C .根据正电荷的电场分布可知,B 点更靠近点电荷,所以B D 段的平均场强大小大于AD 段的平均场强,根据U Ed =可知,BD 之间的电势差U BD 大于DA 之间的电势差U DA ,C 正确; D .由A 点到B 点,根据动能定理得 sin 02 AB L mg θqU ? += 由2 sin A Qq mg k ma L θ-=可得 214Qq mg k L = 联立上式解得 AB kQ U L =- D 错误。 故选BC 。 2.电荷量相等的两点电荷在空间形成的电场有对称美.如图所示,真空中固定两个等量异种点电荷A 、B ,AB 连线中点为O.在A 、B 所形成的电场中,以O 点为圆心半径为R 的圆面垂直AB 连线,以O 为几何中心的边长为2R 的正方形平面垂直圆面且与AB 连线共面,两个平面边线交点分别为e 、f ,则下列说法正确的是( ) A .在a 、b 、c 、d 、e 、f 六点中找不到任何两个场强和电势均相同的点 B .将一电荷由e 点沿圆弧egf 移到f 点电场力始终不做功 C .将一电荷由a 点移到圆面内任意一点时电势能的变化量相同 D .沿线段eOf 移动的电荷,它所受的电场力先减小后增大 【答案】BC 【解析】 图中圆面是一个等势面,e 、f 的电势相等,根据电场线分布的对称性可知e 、f 的场强相同,故A 错误.图中圆弧egf 是一条等势线,其上任意两点的电势差都为零,根据公式W=qU 可知:将一正电荷由e 点沿圆弧egf 移到f 点电场力不做功,故B 正确.a 点与圆面内任意一点时的电势差相等,根据公式W=qU 可知:将一电荷由a 点移到圆面内任意一点时,电场力做功相同,则电势能的变化量相同.故C 正确.沿线段eof 移动的电荷,电场

(完整版)重庆巴蜀中学2019年初三上入学数学试卷含解析解析

重庆巴蜀中学2019年初三上入学数学试卷含解析解析 一、选择题:每题4分,共48分。 1.分式的值为零,则x的值为() A.3 B.﹣3 C.±3 D.任意实数 2.方程x2﹣=0的根的情况为() A.有一个实数根 B.有两个不相等的实数根 C.没有实数根D.有两个相等的实数根 3.一个正多边形,它的每一个外角都是45°,则该正多边形是() A.正六边形 B.正七边形 C.正八边形 D.正九边形 4.在一张由复印机放大复印出来的纸上,一个多边形的一条边由原来的1cm变成了4cm,那么这次复印的面积变为原来的() A.不变 B.2倍C.3倍D.16倍 5.如图,以正方形ABCD的对角线AC为一边作菱形AEFC,且点E在AB的延长线上,F在DC 的延长线上,则∠FAB=() A.22.5° B.30°C.36°D.45° 6.下列4×4的正方形网格中,小正方形的边长均为1,三角形的顶点都在格点上,则与△ABC相似的三角形所在的网格图形是() A.B.C.D. 7.对于反比例函数y=,下列说法正确的是() A.图象经过点(1,﹣1) B.图象位于第二、四象限 C.图象是中心对称图形D.当x<0时,y随x的增大而增大

8.目前我国建立了比较完善的经济困难学生资助体系.某校去年上半年发放给每个经济困难学生 389元,今年上半年发放了438元,设每半年发放的资助金额的平均增长率为x,则下面列出的方程 中正确的是() A.438(1+x)2=389 B.389(1+x)2=438 C.389(1+2x)2=438 D.438(1+2x)2=389 9.如图,在?ABCD中,E为CD上一点,连接AE、BD,且AE、BD交于点F,S△DEF:S△ABF=4:25,则DE:EC=() A.2:5 B.2:3 C.3:5 D.3:2 10.如图,矩形ABCD中,点G是AD的中点,GE⊥CG交AB于E,BE=BC,连CE交BG于F,则∠BFC等于() A.45°B.60°C.67.5° D.72° 11.如图,在△ABC中,AB=AC,∠A=36°,BD平分∠ABC交AC于点D,若AC=2,则AD的长是() A.B.C.﹣1 D.+1 12.如图,四边形ABCD中,AC=a,BD=b,且AC⊥BD,顺次连接四边形ABCD各边中点,得到四边形A1B1C1D1,再顺次连接四边形A1B1C1D1各边中点,得到四边形A2B2C2D2,…,如此进行下去,得到四边形A n B n C n D n.下列结论正确的有() ①四边形A2B2C2D2是矩形;②四边形A4B4C4D4是菱形;③四边形A5B5C5D5的周长是,④四边形A n B n C n D n的面积是.

重庆重庆市巴蜀中学校圆周运动专题练习(解析版)

一、第六章 圆周运动易错题培优(难) 1.两个质量分别为2m 和m 的小木块a 和b (可视为质点)放在水平圆盘上,a 与转轴OO ’的距离为L ,b 与转轴的距离为2L ,a 、b 之间用强度足够大的轻绳相连,木块与圆盘的最大静摩擦力为木块所受重力的k 倍,重力加速度大小为g .若圆盘从静止开始绕转轴缓慢地加速转动,开始时轻绳刚好伸直但无张力,用ω表示圆盘转动的角速度,下列说法正确的是( ) A .a 、b 所受的摩擦力始终相等 B .b 比a 先达到最大静摩擦力 C .当2kg L ω=a 刚要开始滑动 D .当23kg L ω=b 所受摩擦力的大小为kmg 【答案】BD 【解析】 【分析】 【详解】 AB .木块随圆盘一起转动,静摩擦力提供向心力,由牛顿第二定律可知,木块受到的静摩擦力f =mω2r ,则当圆盘从静止开始绕转轴缓慢地加速转动时,木块b 的最大静摩擦力先达到最大值;在木块b 的摩擦力没有达到最大值前,静摩擦力提供向心力,由牛顿第二定律可知,f=mω2r ,a 和b 的质量分别是2m 和m ,而a 与转轴OO ′为L ,b 与转轴OO ′为2L ,所以结果a 和b 受到的摩擦力是相等的;当b 受到的静摩擦力达到最大后,b 受到的摩擦力与绳子的拉力合力提供向心力,即 kmg +F =mω2?2L ① 而a 受力为 f′-F =2mω2L ② 联立①②得 f′=4mω2L -kmg 综合得出,a 、b 受到的摩擦力不是始终相等,故A 错误,B 正确; C .当a 刚要滑动时,有 2kmg+kmg =2mω2L +mω2?2L 解得 34kg L ω=

重庆巴蜀中学

重庆巴蜀中学 关于开展校本课程总结表彰及等级评定的通知各位校长、各位老师: 为了调动学校广大教职工积极参与新课程改革,开发校本课程,促进学校办出特色,促进教师专业发展;也为了整理、总结学校开展校本课程建设的成果,不断提高教师、学校实施校本课程建设的能力,经学校研究,决定自2011年起,每年进行一次校本课程建设总结表彰。现将《巴蜀中学校本课程评价方案》(见附一)公布于此,并对校本课程等级申报、评定工作,做如下部署,请各位老师参照执行。 1、凡是参与过高2011级高一(下)选修课程开设(具体课程名称及指导教师姓名,见附三)的教师及课程;凡是参与过高2013级高一(下)选修课程开设(具体课程名称及指导教师姓名,见附四)的教师及课程,因相关资料在学校已有存档,故相关课程教师,可以不再提交资料及填写申报表,学校组织专家组根据学校已有资料进行评审。 2、学校除高2011级、高2013级外,在其他年级开设过选修课的老师,或附 3、附4有遗漏、错误的教师,请将开课的相关材料进行整理,于7月29日以前将纸质材料,课程等级申报表(见附二)交到本部行政楼二楼课改处。或发往bashu_zhang@https://www.doczj.com/doc/aa5990935.html,。逾期不予受理申报申请。 重庆巴蜀中学 2011年7月21日

附一: 巴蜀中学校本课程评价方案 (试行) 一、指导思想及评价原则 落实学校教育理念。校本课程开设要符合学校“教育以人为本,校长以教师为本,教师以学生为本”的教育理念,发现和发展学生的潜能,促进学生全面发展和个性成长,引领教师多元发展。 贯穿学校德育主线。校本课程必须体现学校的“善为根、雅为骨、志为魂”的育人理念,校本课程评价必须依托“公正诚朴”的校训,提升学生对“善雅志”的感悟,培养紧跟时代主旋律的合格中学生。 彰显区域发展特色。校本课程在“131”校本课程体系内,教师可以选择自己认为合适的任何内容来设计课程,但课程的选择要体现学校的办学特色及学校所在区域的政治、经济、文化、社会等各方面实际情况,体现区域发展特色。 把握时代发展脉搏。校本课程的提出和教学内容设计必须符合时代发展的特征,扎根经济、政治、文化和社会的丰厚土壤,尽量体现经济发展的方向、政治民主法治建设进程、文化发展的趋势和社会发展的热点。总之,校本课程要引领时代发展潮流。 坚持科学发展思路。校本课程是在国家课程基础上的拓展,学生能否实现知识、能力、视野的拓展,能否实现情感、态度、价值观的感悟是评价校本课程实施成效的重要内容。因此,校本课程的开发必须与国家课程相一致,与学生身心特点相适应,与学生的兴趣爱好相一致,帮助学生认识科学规律、接受人文熏陶。 二、评价策略

重庆市巴蜀中学(初二上)期八年级期末考试英语试题卷

重庆市巴蜀中学初二上期期末考试英语试题卷 笔试部分(共120分) Ⅴ. 单项选择。(1×20分) 26. What ________ you ________ tomorrow? A. did; do B. will; do C. were; doing D. do;do 27. ---How do you usually come to school? ---________ my father’s car. A. By B. In C. With D. At 28. Give him ________ to eat, please. A. something delicious B. delicious something C. anything delicious D. delicious anything 29. She stopped ________ to the music and didn’t cry ________. A. listening; any more B. to listen; any more C. listened; no longer D. to listen; no more 30. ---Could you take a message for me, please? --- ________. A. I am glad B. Yes, I could C. Sure, I can D. No, I can’t 31. ---________ does your sister walk her dog? --- Once a day. A. How many B. How long C. How D. How often 32. Cindy, I heard that you took some photos with Jay in HK last week. Can you ________? A. show them to me B. show it to me C. show me them D. show me it 33. ________ eye exercises ________ good for your eyes. A. Doing; are B. Do; is C. Do; are D. Doing; is 34. We should use ________ people and ________ money to do the work better. A. less; less B. fewest; less C. fewer; less D. fewer; least 35. ---Can you come to my party on weekend? ---________. But I have to look after my little sister at home. A. Yes, I can B. No, I can’t C. I think so D. I’d love to 36. The man ________ a pair of glasses on his nose is my physics teacher. A. has B. with C. in D. wears 37. ---________? ---I have a sore throat. A. What’s the matter . B. What are you doing C. Can you help me D. What’s the weather like 38. ---Whose picture is better, Jack’s or Tom’s? ---Both of them are good. I think Jack draws ________ Tom. A. as good as B. as well as C. better than D. worse than 39. I have __________ homework to do every day, so I can’t have enough sleep. A. too much B. much too C. too many D. many too 40. I was too busy _________ to my parents last week. A. to write B. writing C. write D. wrote 41. This coat is ________ in the shop. A. expensive B. the most expensive C. more expensive D. most expensive 42. Here ________ the results ________ the student activity survey. A. is; with B. are; of C.is; of D. are; with 43. ---When was your father born? ---My father was born ________ September 21st, 1959. A. in B. at C. on D. of 44. I hope ________ the music club in this Art Festival. A. joining B. joins C. to join D. join

重庆、四川及全国重点中学排名(前260名)

重庆、四川及全国前260名中学 北京 北京四中人大附中北师大实验中学北大附中清华附中101中学北师大二附中八十中景山学校汇文中学 甘肃兰州一中西北师大附中甘肃兰州新亚中学兰州铁路局第五中学西峰三中 湖南师大附中长沙一中雅礼中学岳阳一中长郡中学浏阳一中株洲二中衡阳八中湘潭一中 湖北华师一附中黄冈中学荆州中学武汉二中武钢三中孝感高中襄樊四中襄樊五中沙市中学宜昌一中 江西师大附中南昌二中九江一中鹰潭一中高安中学临川一中白鹭洲中学玉山一中上高二中金溪一中 陕西西工大附中交大附中西安中学长安一中西安铁一中西安市第一中学 四川成都七中石室中学树德中学棠湖中学成都实验外国语学校雅安中学绵阳中学南充高中彭州中学 安徽合肥一中安庆一中芜湖一中马鞍山二中安师大附中蚌埠二中淮北一中黄山屯溪一中涡阳四中 广西南宁二中桂林中学柳州高中南宁三中桂林十八中柳州铁一中河池地区高中 吉林师大附中省实验吉林一中延边二中长春十一中长春市实验中学松原市油田高中长春外国语学校 江苏南师大附中苏州中学常州高中徐州一中盐城中学启东中学海门高中扬州中学如东高中丹阳中学 山东省实验中学青岛二中山师大附中烟台二中莱阳一中潍坊二中济南外国语学校济南一中潍坊一中日照一中 天津南开中学耀华中学一中实验中学新华中学 浙江杭二中镇海中学效实中学诸暨中学学军中学台州中学杭州外国语学校绍兴一中嘉兴一中杭州十四中 上海上海中学华师二附中复旦附中格致中学交大附中延安中学广东华师大附中深圳中学中山一中佛山一中深圳高中惠州一中中山纪念中学湛江一中执信中学广州六中 河北石家庄二中衡水中学唐山一中正定中学保定一中石家庄一中邢台市一中辛集中学冀州中学 海南海南中学加积中学海南国兴中学海师附中海南二中海南侨中海口一中海口实验中学 内蒙古呼市二中师大附中包头北重三中包钢一中包头市第一中学包头市第33中学 新疆乌市一中新疆实验克拉玛依四中兵团二中 山西太原五中省实验中学康杰中学山大附中忻州一中成成中学平遥中学大同1中 云南昆明一中昆明三中师大附中昆明八中昆钢集团公司第四中学

重庆市巴蜀中学2016-2017学年度第一学期期末考试 2018级初二上册数学试题卷

重庆市巴蜀中学2016-2017学年度第一学期期末考试 2018级初二上册数学试题卷 一、选择题(每小题4分,共48分) 01.下列实数中的无理数是( ) A .3 B .0(1)p - C .2 D 02.在一些汉字的美术字中,有的是轴对称图形.下面四个美术字中可以看作轴对称图形的是( ) A . B . C . D . 03.下列说法正确的是( ) A .要了解人们对“低碳生活”的了解程度,宜采用普查的方式. B .数据3、4、5、5、6、7的众数是5. C .若一个游戏的中奖率是1%,则做100次这样的游戏一定会中奖. D .甲乙两人射击各10次,甲的方差是0.168,乙的方差是0.34,则乙的成绩比甲稳定. 04.下列运算正确的是( ) A 4? B 1- C 1- D 21+ 05.不等式组10 235x x ì+í+?≤<的解集在数轴上表示为( ) A . B . C . D . 06.如图,将一块含有30°角的直角三角板的两个顶点放在矩形直尺的一组对边上.若∠2=60°,则∠1的度数为( ) A .60° B .50° C .40° D .30° 07.把一次函数23y x =-的图象沿y 轴向上平移5个单位,则此时新的函数图象与y 轴的交点坐标是 A .(03)-, B .(05), C .(07), D .(02), ( ) 08.若x y >,则下列式子错误.. 的是( ) A .11x y ->- B .55 x y > C .33x y +>+ D .33x y ->- 09.如图,在Rt△ABC 中,∠C=90°,∠CAB 的平分线交BC 于D ,D E 垂直平分AB 于点E .若BC =3,则DE 的长为( ) A .1 B .2 C .3 D .4 10.如图,在同一平面直角坐标系中,表示一次函数y mx n =+与正比例函数y mnx =(m n 、 是常数且0mn 1)图象的是( ) A . B . C . D . 11.在20km 越野赛中,甲乙两选手的行程y (km )随时间x (h )变化的图象如图所示,根据图中提供的信息,有下列说法:①两人相遇前,甲的速度小于乙的速度;②出发后1小时,两人行程均为10km ;③出发后1.5小时,甲的行程比乙多3km ;④甲比乙先到达终点.其中正确的有( ) A .1个 B .2个 C .3个 D .4个 第06题图 第09题图 第11题图 第12题图

重庆重庆市巴蜀中学校高一上学期期末考试(物理)含答案

重庆重庆市巴蜀中学校高一上学期期末考试(物理)含答案 一、选择题 1.如图所示,物体A和B受到的重力分别为10N和8N,不计弹黄秤和细线的重力和一切摩擦,则弹簧秤的读数为() A.18N B.8N C.2N D.10N 2.转笔是一项用不同的方法与技巧、以手指来转动笔的休闲活动,如图所示.转笔深受广大中学生的喜爱,其中也包含了许多的物理知识,假设某转笔高手能让笔绕其手上的某一点O做匀速圆周运动,下列有关该同学转笔中涉及到的物理知识的叙述正确的是 A.笔杆上的点离O点越近的,角速度越大 B.笔杆上的点离O点越近的,做圆周运动的向心加速度越大 C.笔杆上的各点做圆周运动的向心力是由万有引力提供的 D.若该同学使用中性笔,笔尖上的小钢珠有可能因快速的转动做离心运动被甩走 3.下列物理量中不属于矢量的是() A.速率B.速度C.位移D.静摩擦力 4.一小船在静水中的速度为3m/s,它在一条河宽300m,水流速度为4m/s的河流中渡河,则该小船() A.能到达正对岸 B.渡河的时间可能少于100s C.以最短时间渡河时,它沿水流方向的位移大小为400m D.以最短位移渡河时,位移大小为300m 5.盐城某火车转弯处规定速度为60km/h,下列说法中正确的是() A.轨道的弯道应是内轨略高于外轨 B.轨道的弯道应是外轨和内轨等高 C.如果火车按规定速率转弯,轨道对车轮无侧向压力 D.如果火车按规定速率转弯,轨道对车轮有侧向压力 6.如图所示,竖直放置的玻璃管内放置着一片树叶和一个小石子,现将玻璃管迅速翻转180°,玻璃管内非真空,下列说法正确的是()

A .树叶和小石子同时落到底部 B .小石子在下落过程中,处于失重状态 C .树叶在下落过程中,处于超重状态 D .将玻璃管抽成真空,重复上述实验,在树叶和小石子下落过程中,树叶和小石子都处于超重状态 7.滑块以某一初速度冲上斜面做匀减速直线运动,到达斜面顶端时的速度为零.已知滑块通过斜面中点时的速度为v ,则滑块在前一半路程中的平均速度大小为( ) A . 21 2 v B .2+1)v C 2v D . 12 v 8.下列关于弹力的说法中正确的是( ) A .直接接触的两个物体间必然有弹力存在 B .不接触的物体间也可能存在弹力 C .只要物体发生形变就一定有弹力 D .直接接触且发生弹性形变的物体间才产生弹力 9.一个物体受到大小分别为2 N 、4 N 和5 N 的三个共点力的作用,其合力的最小值和最大值分别为( ) A .0 N ,11 N B .1 N ,11 N C .1 N ,9 N D .0 N ,9 N 10.一物体挂在弹簧秤下,弹簧秤的上端固定在电梯的天花板上,在下列哪种情况下弹簧秤的读数最小( ) A .电梯匀加速上升,且3g a = B .电梯匀加速下降,且3g a = C .电梯匀减速上升,且2 g a =

重庆市巴蜀中学 2021 届高三(上)一诊模拟测语文试卷及参考答案

重庆市巴蜀中学2021届高三(上)一诊模拟卷 语文试卷 一、现代文阅读 (一)论述类文本阅读 阅读下面的文字,完成1-3题。 自古以来,东西方都重视美育对立德树人的作用。古希腊柏拉图曾在《理想国》中提出音乐教育对于培养城邦公民勇敢、节制、正义等美德的重要性。而美育之于数千年中华民族社会发展与文化传承亦功不唐捐。上古时期,中国便已出现诗、乐、舞三位一体的乐教;西周建立起来的礼乐文化制度,则对中国数千年文明产生了极为深远的影响。春秋时期,孔子提出的“兴于诗,立于礼,成于乐”“志于道,据于德,依于仁,游于艺”等思想,更奠定了审美教育特别是艺术教育在中国文化中不可替代的地位。孔子深知艺术审美的力量,虽然“礼”与“德”已由德育内化为一种心理要求,但只有“成于乐”“游于艺”的美育才是最高境界。在此,道德目标通过审美转化,成为自由人性的有机组成而发端内心,让枯燥严肃的理性染上灵动的色彩。孔子的美育思想是后世文以载道的理论基础,也是其精神价值核心所在,被此后的儒家所继承。如战国孟子提出“充实之谓美”;西汉《乐记》提出“乐者,伦理者也”;宋明理学经广泛吸收佛道理论之后,将美育理论本体化、精致化、体系化,提倡洒落自得、浑然至乐的人生风范和人生境界,强调通过“乐”这一自由心境的体验,达到真、善、美及知、情、意的统一等等。 不难看出,中国传统美育不仅传授艺术形式带来的审美情感,而且蕴含深厚浓郁的家国情怀、社会理性与道德精神。事实上,道德和艺术正是中华传统文化两大精神基石,中华人文精神亦由此带有泓邃的审美品格。如钱穆所言:“文学必在道义中,而道义则求其艺术化。中国之人生乐处,即在是矣。岂非中国之文化特质乎!”在中国,艺术与道德的有机结合,涵养出一种人格审美求善的美育文化和美育精神,甚至不妨说,中华传统文化精神的形成方式和渠道就是美育。纵观历代中国社会,无不将生活化、道德化的艺术作为人格培养的基本手段。这种通过审美中介来实现外在规范向内在自觉的转变,迥异于德国哲学家康德对抽象“先验理性”或“道德律令”的绝对服从,而是融合具体情境,一方面在艺术审美中追求人格的道德境界,另一方面又在道德培养中追求人格的艺术境界,最终实现“从心所欲不逾矩”的极致。 随着中西文化交流空前密切,中国美育文化和美育精神开始发生变化,其理论形态呈现出中西交融的面貌,也涌现出不少杰出人物和精彩观点。如王国维的《论教育之宗旨》,首次全面论述了美育在教育体系中的重要地位,初步建立起中国现代美育架构。蔡元培筑基于中国传统文化特质的同时,借鉴康德、席勒美育思想中的有益成分,提出“以美育代宗教”。蔡元培还推动美育列入国民教育计划,让中国现代美育走上理论与实践相结合的道路。朱光潜则拓展了蔡元培的美育理论,以当时美学和心理学研究最新成果为依据,强调美育对个体心灵的解放功能,突出了美育作为创新教育的特征和意义,并将美育落实到人的生命体验之中。刘海粟、丰子恺、林风眠等人的艺术教育便属于这种美育观点的践行。如果说王国维、蔡元培、朱光潜等人的美育思想属于启蒙类型,那么,陶行知、徐悲鸿等人奉行的美育思想则将美育的终极指向定位于社会救亡与民族解放。 (摘编自吴为山《以美育提升人文素养筑微博橙子辅导》)1.(3 分)下列关于原文内容的理解和分析,正确的一项是() A.古希腊柏拉图认为没有音乐教育就不能培养城邦公民勇敢、节制、正义等美德。 B.文章认为在几千年中华民族社会发展与文化传承中美育作用大,是功不可没的。 C.钱穆认为中国文化的特质就是文学与道义是分离的,又是紧密结合在一起的。

重庆市巴蜀中学校2018_2019学年高一政治10月月考试卷

重庆市巴蜀中学校2018-2019学年高一政治10月月考试卷 一、单项选择题(每小题3分,共75分) 1.在经济生活中,我们经常会使用货币,货币的本质是() A.商品流通 B.一般等价物C.价值尺度D.商品 2.外汇是() A.用外币表示的用于国际间结算的支付手段 B.用本币表示的用于国际间结算的流通手段 C.两种货币之间的兑换比率D.世界各国普遍使用的货币 3.下列关于商品的说法正确的是() ①自然界的花草树木都是商品 ②在市场上出售的灌装空气是商品 ③假药由于是劳动的产物,同时也用于了交换,因此是商品 ④手机缴费后中国移动赠送的免费流量是商品 A.①②B.③④C.①③D.②④4.2017年10月22日上午,十九大新闻中心举办记者招待会。会后,住房城乡建设部党组书记、部长王蒙徽在门口被记者围住,继续就百姓普遍关注的住房问题进行采访。王蒙徽说:“我们坚持房子是用来住的、不是用来炒的定位,坚持分类调控,因城因地施策,落实地方政府主体责任,出台了一系列有针对性的措施来稳定市场”。“房子是用来住的”强调房子的() A.使用价值B.价值 C.价格D.使用价值和价值的统一 5.2017年7月1日,是中国恢复对香港行使主权暨香港特别行政区成立20周年纪念日。为此中国人民银行发行《荣归二十载》纪念币一套,每枚面值为100元。该纪念币与现行流通的人民币职能相同,与同面值的人民币等额流通。该纪念币() A.不能直接购买商品B.只有收藏价值,没有价值 C.购买力由国家决定D.能够表现其他一切商品的价值6.“夫珠玉金银,饥不可食,寒不可衣”,但人们还是喜欢金银。这表明金银作为货币()A.从起源看,是和商品同时产生的 B.从作用看,是财富的唯一象征 C.从本质看,是固定充当一般等价物的商品 D.从职能看,具有价值尺度、贮藏手段两种基本职能 7.2017年我国信用卡发卡量超过5.71亿张,较上年末增长22.79%。信用卡发卡量不断增长,是因为使用信用卡消费()

2019-2020学年重庆市渝中区巴蜀中学校2018级高二上学期期末考试数学试卷及解析

2019-2020学年重庆市渝中区巴蜀中学校2018级高二上学期期末考试 数学试卷 ★祝考试顺利★ (解析版) 一、选择题(本大题共12小题,每小题5分,共60分,每小题给出的四个选项中,只有一项是符合题目要求的) 1.椭圆 2 21 4 x y +=的离心率为( ) A. 2B. 3 4 C. 2 D. 2 3 【答案】A 【解析】 先根据椭圆的标准方程计算椭圆的长半轴长a和半焦距c,再利用离心率定义计算即可 【详解】椭圆 2 21 4 x y +=的长半轴长a=2,短半轴长b=1 ∴椭圆的半焦距 c= ∴椭圆的离心率 e c a == 故选A. 2.下列说法正确是() A. 三点确定一个平面 B. 四边形一定是平面图形 C. 梯形一定是平面图形 D. 平面α和平面β有不同在一条直线上的三个公共点【答案】C 【解析】 由公理3知:不共线的三个点确定一个平面,即可判断A;由不共面的四个点构成的四边形为空间四边形,即可判断B;

梯形的一组对边平行,即可判断C ; 由公理3得不同在一条直线上的三个公共点确定一个平面,即可判断D . 【详解】A. 由公理3知:不共线的三个点确定一个平面,故A 错; B. 四边形有平面四边形和空间四边形两种,由不共面的四个点构成的四边形为空间四边形,故B 错; C. 在同一平面内,梯形的一组底边平行,平行的两条直线确定一个平面,故C 正确; D. 不共线的三个点确定一个唯一一个平面,故D 错误. 故选:C. 【点睛】本题考查公理1、2、3,考查了公理掌握的熟练程度,考查了推理能力,属于基础题. 3.已知函数()sin 2f x x =,则的导函数( ) A. cos2x B. cos2x - C. 2cos2x D. 2cos2x - 【答案】C 试题分析:根据正弦函数的导数公式及复合函数的求导法则可得:令sin ,2y u u x ==,则 ()(cos )22cos 2u x f x y u u x =?=''='?,故选C. 4.下列双曲线中,渐近线方程为2y x =±的是( ) A. 2 214y x -= B. 2 214 x y -= C. 22 12y x -= D. 2 212x y -= 【答案】A 【解析】 由双曲线的渐进线的公式可行选项A 的渐进线方程为 ,故选A. 5.函数()()1x f x x e =-的单调递减区间是( ) A. (),2-∞ B. 2, C. ,0 D. 0, 【答案】D 【解析】 求出函数的定义域、导函数,令()0f x '<解得函数的单调递减区间.

(完整版)2019年重庆巴蜀中学小升初数学试卷

数学试卷 (时间:60分钟 分值:100分) 一、填空:(每题3分,共36分) 1、一个四位数□73□,有约数3,又是5的倍数,这样的四位数一共有 个。 2、 在己考的4次考试中,张明的平均成绩为90分(每次考试的满分是100分),为了使平均成绩尽快达到95分以上,他至少还要连考( )次满分。 3、有一种由3份甲种糖和2份乙种糖配成的什锦糖,比由2份甲种糖和3份乙种糖配成的什锦糖每千克贵5. 28元,那么每千克甲种糖比每千克乙种糖要贵( )元。 4、甲、乙两个长方形它们的周长相等。甲的长宽比是3:1,乙的长宽比是5:1,甲、乙两个长方形面积比是( )。 5、一堆棋子有黑、白两种颜色,其中黑子占22 7 ;若增加10枚白子,这时黑子占72。那么, 这堆棋子原有 枚。 6、一个等腰三角形的腰是acm ,底是bcm ,这个图形的面积最大是( )cm 2。 7、把 7 1 化成小数后,小数点后50个数字之和是( )。 8、重庆巴蜀中学五年级参加数学竞赛的同学约有二百多人,考试成绩得90~100分的恰好占参赛人数的 71,得80~89分的占参赛人数的51,得70~79分的占参赛人数的3 1 ,那么70分以下的有 人。 9、有一正方体的体积是12cm 3,把这个正方体削成一个最大的圆锥体,圆锥体的体积是( )cm 3。 。 10、己知a:b=c:d ,现将a 扩大2倍,b 缩小到原来的31 ,而c 不变,d 应( ) 比例仍然成立。 11、某球赛门票15元1张,降价后观众增加了一半,收入增加了五分之一,则每张门票降价了( )元。 12、五年级参加文艺会演的共46人,其中女生人数的54是男生人数的12 1 倍,则参加演出的男生( )人。 二、选择:(每题2分,共10分) 1、一个长20分米的方木的横截面是边长为m 分米的正方形,将它锯掉8分米后,方木的体积比原来减少( )。 A 、8m 立方分米 B 、12m 立方分米 C 、8m 2立方分米 D 、12m 2立方分米 2、 把一根铁丝分成两段,第一段是全长的32,第二段是全长的3 2 米,第一段与第二段比( )。 A 、第一段长 B 、第二段长 C 、一样长 D 、无法比较 3、 a × 52=b ×53=c ×5 7 =d ,a 、b 、c 、d 都是不为0的自然数,其中最小的一个数是:( ) A 、a B 、b C 、c D 、d 4、 一个圆锥体和一个圆柱体的体积比7:8,它们的底面半径的比是3:2,那么该圆锥体和圆柱体高的比是( ) A 、7:18 B 、32: 63 C 、7:6 D 、6:7 5、下面判断中错误的有( )个。 A 、1 B 、2 C 、3 D 、4 两个面积相等的三角形不一定能拼成平行四边形。 ②因为2012年的2月有28日这一天,所以2012年是平年。 ③一件大衣,如果卖100元,可赚25%;如果卖120元,就赚50% ④一个两位小数精确到0.1后的近似值是2.0.这个小数最大是2.44。 ⑤一个圆柱和一个圆锥等底等高,那么圆柱的体积是圆锥的31 。 三、计算:(共28分) 1、直接写出答案(每题2分,共10分) 16.15÷1.7+0.85÷1.7= 199+99×99= ( 94+135+95+138)×1009= 2.25× 53+2.75÷13 2 +60%= 99999÷5+9999÷5+999÷5+99÷5+9÷5= 2、神机妙算(每题3分,共18分) 1、5132×5 3+7143×74+9154÷59 2、 256×255254+254×2551 3、141-521×19961995×521380 -181 1 4、 121+201+301+421+561+721+901 就读学校: 年级 班 姓名: 联系电话: 联系电话: ……密… …封 … … 线 … … 内… … 不 ……得……答… …题 … …

精品解析:重庆市渝中区巴蜀中学校2021-2021学年九年级上学期期末化学试题(解析版)

2021-2021 学年重庆市巴蜀中学九年级(上)期末化学试卷 一、选择题(本大题包括16 小题,每小题 2 分,共32 分,每小题只有一个选项符合题意) 1.在一次野炊活动中,下列分工一定属于化学变化的是() A.小明拔萝卜 B. 小刚生炭火 C. 小敏净化水 D. 小花洗碗筷 【答案】B 【解析】 【详解】A、小明拔萝卜只是将其从地里拔出,没有新物质生成,属于物理变化,故不符合题意; B、小刚生炭火是利用炭燃烧,属于化学变化,故符合题意; C、小敏净化水只是将其中的杂质除掉,属于物理变化,故不符合题意; D、小英洗碗筷只是用水将杂质洗掉片,没有新物质生成,属于物理变化,故不符合题意。 2.下列厨房中常见的物质分别加入蒸馏水中,搅拌,不能形成溶液的是() A. 食盐 B. 蔗糖 C. 味精 D. 面粉 【答案】D 【解析】 【详解】A、食盐能够溶于水,加入蒸馏水中能够形成溶液,故不符合题意; B、蔗糖能够溶于水,加入蒸馏水中能够形成溶液,故不符合题意; C、味精能够溶于水,加入蒸馏水中能够形成溶液,故不符合题意; D、面粉不溶于水,加入蒸馏水中不能形成溶液,故符合题意。 3.正确的实验操作对实验结果、人身安全非常重要。下列实验操作正确的是() A. 过滤 B. 闻气体气味 C. 检查装置气密性 D. 称量食盐 【答案】C 【解析】 【详解】A、过滤时应用玻璃棒引流,故选项不正确; B、闻气体的气味时,要用手轻轻煽动瓶口,让气体飘入鼻孔,故选项不正确;

C、检查装置气密性的方法:把导管的一端浸没在水里,双手紧贴容器外壁,若导管口有气泡冒出,装置不漏气,故选项正确; D、托盘天平的使用要遵循“左物右码”的原则,故选项不正确。 4.下列实验现象的描述正确的是() A. 白磷自燃产生白色烟雾 B. 硝酸铵固体溶解于水时,溶液温度升高 C. 装满CO2 的集气瓶中加入石蕊试液,石蕊变红 D. 铁丝伸入到硫酸锌溶液中,表面有白色固体生成 【答案】C 【解析】 【详解】A、白磷自燃产生大量的白烟,而不是白色烟雾,故选项不正确; B、硝酸铵固体溶解于水时吸热,溶液温度降低,故选项不正确; C、装满CO2 的集气瓶中加入石蕊试液,石蕊变红,故选项正确; D、铁丝伸入到硫酸锌溶液中,不反应,无明显变化,故选项不正确。 5.下列物质前者属于混合物,后者属于单质的是() A. 石灰石黄铜 B. 软水干冰 C. 稀有气体液氮 D. 冰水混合物臭氧 【答案】C 【解析】 【详解】A、石灰石、黄铜都属于混合物,故不符合题意; B、软水可能是纯净物,也可能是混合物,干冰属于化合物,故不符合题意; C、稀有气体属于混合物,液氮属于单质,故符合题意; D、冰水混合物中只有水分子,属于纯净物;臭氧属于单质,故不符合题意 6.下列实验操作不会发安全问题的是() A. S 在O2 中燃烧,集气瓶中加点水 B. 煤气泄漏,开抽油烟机排气 C. 加热高锰酸钾粉末的试管向上倾斜 D. 制得氢气后,立即点燃 【答案】A 【解析】

重庆重庆市巴蜀中学校高一上学期期中考试(物理)含答案

重庆重庆市巴蜀中学校高一上学期期中考试(物理)含答案 一、选择题 1.中国自主研发的“暗剑”无人机,时速可超过2马赫.在某次试飞测试中,起飞前沿地面做匀加速直线运动,加速过程中连续经过两段均为120m的测试距离,用时分别为2s 和l s,则无人机的加速度大小是 A.20m/s2 B.40m/s2 C.60m/s2 D.80m/s2 2.意大利物理学家伽利略在《两种新科学的对话》一书中,详细研究了落体运动,他所运用的方法是( ) A.假设-观察-逻辑推理(包括数学推演)-实验检验-修正推广 B.观察-假设-逻辑推理(包括数学推演)-实验检验-修正推广 C.逻辑推理(包括数学推演)-假设-观察-实验检验-修正推广 D.逻辑推理(包括数学推演)-观察-假设-实验检验-修正推广 3.如图所示,人站立在体重计上,下列说法正确的是() A.人对体重计的压力和体重计对人的支持力是一对平衡力 B.人对体重计的压力和体重计对人的支持力是一对作用力和反作用力 C.人所受的重力和人对体重计的压力是一对平衡力 D.人所受的重力和人对体重计的压力是一对作用力和反作用力 4.如图所示,粗糙的A、B长方体木块叠放在一起,放在水平桌面上,B木块受到一个水平方向的牵引力,但仍然保持静止,则B木块受力个数为 A.4 B.5 C.6 D.3 5.利用无人小飞机进行航拍,地面操控者进行以下操作时,能把无人机看成质点的是A.观察飞机通过一个标志杆所需时间B.调整飞机的飞行姿态 C.调整飞机旋转机翼D.调整飞机与被摄物体的高度差 6.质点做直线运动的速度—时间图象如图所示,该质点

A.在第1秒末速度方向发生了改变 B.在第2秒末加速度方向发生了改变 C.在前2秒内发生的位移为零 D.第3秒和第5秒末的位置相同 7.一物体以一定的初速度在水平地面上匀减速滑动.若已知物体在第1秒内位移为8.0 m,在第3秒内位移为0.5 m.则下列说法正确的是 A.物体的加速度一定为3.75 m/s2 B.物体的加速度可能为3.75 m/s2 C.物体在第0.5秒末速度一定为4.0 m/s D.物体在第2.5秒末速度一定为0.5 m/s 8.近几年,在国家宏观政策调控下,我国房价上涨出现减缓趋势。若将房价的“上涨”类比成“加速”,将房价的“下跌”类比成“减速”,据此,你认为“房价上涨出现减缓趋势”可类比成() A.速度增加,加速度减小 B.速度增加,加速度增大 C.速度减小,加速度增大 D.速度减小,加速度减小 9.如图所示,竖直平面内固定的半圆弧轨道两端点M、N连线水平,将一轻质小环套在轨道上,一细线穿过轻环,一端系在M点,另一端系一质量为m的小球,不计所有摩擦,重力加速度为g,小球恰好静止在图示位置,下列说法疋确的是() A.轨道对轻环的支持力大小为mg B.细线对M 3mg C.细线对轻环的作用力大小为3 2 mg D.N点和轻环的连线与竖直方向的夹角为30° 10.甲、乙、丙三辆汽车同时以相同的速度经过某一路标,此后甲一直做匀速直线运动,乙先加速后减速,丙先减速后加速,它们经过下一路标时的速度仍相同,则 A.甲车先经过下一个路标B.乙车先经过下一个路标 C.丙车先经过下一个路标D.无法判断谁先经过下一个路标

重庆巴蜀中学数学全等三角形(培优篇)(Word版 含解析)

一、八年级数学全等三角形解答题压轴题(难) 1.如图,已知△ABC中,AB=AC=20cm,BC=16cm,点D为AB的中点. (1)如果点P在线段BC上以6cm/s的速度由B点向C点运动,同时点Q在线段CA上由C向A点运动. ①若点Q的运动速度与点P的运动速度相等,经过1秒后,△BPD与△CQP是否全等,请说明理由; ②若点Q的运动速度与点P的运动速度不相等,当点Q的运动速度为多少时,能够使 △BPD与△CQP全等? (2)若点Q以②中的运动速度从点C出发,点P以原来的运动速度从点B同时出发,都逆时针沿△ABC三边运动,求经过多长时间点P与点Q第一次在△ABC的哪条边上相遇?【答案】(1)①△BPD≌△CQP,理由见解析;②V7.5 Q (厘米/秒);(2)点P、Q 在AB边上相遇,即经过了80 3 秒,点P与点Q第一次在AB边上相遇. 【解析】 【分析】 (1)①先求出t=1时BP=BQ=6,再求出PC=10=BD,再根据∠B=∠C证得 △BPD≌△CQP; ②根据V P≠V Q,使△BPD与△CQP全等,所以CQ=BD=10,再利用点P的时间即可得到点Q的运动速度; (2)根据V Q>V P,只能是点Q追上点P,即点Q比点P多走AB+AC的路程,设运动x 秒,即可列出方程15 6220 2 x x,解方程即可得到结果. 【详解】 (1)①因为t=1(秒), 所以BP=CQ=6(厘米) ∵AB=20,D为AB中点, ∴BD=10(厘米) 又∵PC=BC﹣BP=16﹣6=10(厘米)∴PC=BD ∵AB=AC, ∴∠B=∠C, 在△BPD与△CQP中,

BP CQ B C PC BD =?? ∠ =∠??=? , ∴△BPD ≌△CQP (SAS ), ②因为V P ≠V Q , 所以BP ≠CQ , 又因为∠B =∠C , 要使△BPD 与△CQP 全等,只能BP =CP =8,即△BPD ≌△CPQ , 故CQ =BD =10. 所以点P 、Q 的运动时间84 663 BP t (秒), 此时 107.5 43 Q CQ V t (厘米/秒). (2)因为V Q >V P ,只能是点Q 追上点P ,即点Q 比点P 多走AB +AC 的路程 设经过x 秒后P 与Q 第一次相遇,依题意得15 62202 x x , 解得x= 803 (秒) 此时P 运动了 80 61603 (厘米) 又因为△ABC 的周长为56厘米,160=56×2+48, 所以点P 、Q 在AB 边上相遇,即经过了80 3 秒,点P 与点Q 第一次在AB 边上相遇. 【点睛】 此题考查三角形全等的证明,三角形与动点相结合的解题方法,再证明三角形全等时注意顶点的对应关系是证明的关键. 2.(1)问题背景: 如图1,在四边形ABCD 中,AB =AD ,∠BAD =120°,∠B =∠ADC =90°,E 、F 分别是BC ,CD 上的点,且∠EAF =60°,探究图中线段BE ,EF ,FD 之间的数量关系. 小王同学探究此问题的方法是延长FD 到点G ,使DG =BE ,连结AG ,先证明△ABE ≌△ADG ,再证明△AEF ≌△AGF ,可得出结论,他的结论应是 ;

相关主题
相关文档 最新文档