2015海淀区九年级第二学期英语一模试题
知识运用（共25分）
四、单项填空。（共10分，每小题1分）
从下面各题所给的A、B、C、D四个选项中，选择可以填入空白处的最佳选项。
21. My sister Jane is outgoing.We all love______ very much.
A. him
B. her
C. us
D. you
22. Mother?s Day is ______ May 10th this year.
A. on
B. of
C. in
D. at
23. It?s raining. Take an umbrella with you, ______ you?ll get wet.
A. and
B. but
C. so
D. or
24. — Must we leave the reading room before 5 o?clock?
— No, you ______. You can stay here until 5:30.
A. can?t
B. needn?t
C. mustn?t
D. shouldn?t
25. Look! The girls______ for the talent show happily.
A. prepare
B. will prepare
C. are preparing
D. prepared
26. —______ do you play the guitar?
—Three times a week.
A. How much
B. How old
C.How long
D. How often
27. Parents often tell us ______ quiet in public places.
A. to be
B. being
C. are
D. be
28. Peter is really a brave boy and he ______ to many places by himself since 2010.
A. traveled
B. travels
C. is traveling
D. has traveled
29. Lots of lessons ______ on the Internet these days.
A. give
B. are given
C. gave
D. weregiven
30. —Could you tell me ______ at the station?
— At nine tomorrow morning.
A. when we met
B. when did wemeet
C. when we will meet
D. when will we meet
阅读理解（共50分）
六、阅读下列短文，根据短文内容，从短文后各题所给的A、B、C、D四个选项中，选
择最佳选项。（共30分，每小题2分）
A
World Wonders
Our world has many famous landmarks. A landmark is a building or place that is special to an area. Some landmarks are built by people. Other landmarks are things in nature, such as a
Giza, Egypt
Pisa, Italy built on soft soil. That caused the tower to lean to one side
800
inside to see a great view of the city.
Sydney, Australia
41. Where is Machu Picchu?
A.In Pisa, Italy.
B. In Giza, Egypt.
C.In the Andes Mountains in Peru.
D. In Sydney, Australia.
42. What does Sydney Opera House look like?
A. The body of a lion.
B. The head of a person.
C. A bell tower.
D. A ship with sails.
43. Which of the following is the oldest?
A. Machu Picchu.
B. Great Sphinx.
C. Leaning Tower of Pisa.
D. Sydney Opera House.
B
I found the black and white cat on my front doorway. He was crying like a human baby. Where did he come from? I noticed he had no collar (项圈). Who would be so careless?
I went inside and brought out a can of fish. The cat hungrily ate it up and
then walked right inside the house.
I wanted to get him out, but I hesitated. Our family never owned pets,
but I had always wanted one.
Just then, the cat meowed and jumped up onto my leg. Well, he
seemed to like me! Maybe I didn?t have to give him back after all!
The cat kept meowing a lot. I knew I had to go to the store and get some cat food.
On my way out, I saw a sign on the telephone pole:
LOST CAT
Black and white, very friendly. If you find him, please call
us at 617-58463302. We are worried sick.
“Hmm,” I thought. “If you were so worried about your kitten, maybe you should have taken better care of him!”
When I walked into the pet store, I saw a group of kids hanging up notices about this same cat there.
“I can?t believe I lost my cat!” a little boy in a wheelchair cried to his parents. “I couldn?t get to the open door in time!”
I looked at the notices on the wall. It was surely the cat I had back at home.
Then the truth of the situation hit me: I had stolen a little boy?s cat!
Now I realized there was a lot I didn?t understand. I tried to explain why I should keep the cat by convincing myself the owners deserved to lose him. Now I saw that it was all a big mistake.
I walked to the little boy.
“I have your cat,” I told him. “I?m sorry. I just found him and fed him. He?s at my house.”
The little boy began to cry with laughter. He blew his nose and gave me a great big hug. “Thank you so much! I was just about to put a new collar on him whe n he ran out of the door. I couldn?t chase him! Because of my... you know... my legs.”
“I?ll be right back,” I told him. I ran home to get the cat and reunite owner and pet.
44. What did the writer think of the cat?s owner at first?
A. Lazy.
B. Loving.
C. Careless.
D. Friendly.
45. What did the writer see in the pet store?
A. Kids hanging up notices about the cat.
B. Pets walking around playing there.
C. Boys looking for their pets there.
D. Owners showing off their cats.
46. Why did the writer run home to get the cat?
A. Because the boy asked her to give backhis cat.
B. Because she wanted to find the cat a better owner.
C. Because the boy promised not to lose the cat again.
D. Because she knew the boy loved and owned the cat.
47. What can we know from the story?
A. Not all kids are lucky enough to own pets.
B. Sometimes we make a judgement too soon.
C. Too often we enjoy cats as good company.
D. Everyone should help people in trouble.
C
Need to buy something? Why go to a store? Buy it on the Internet! Need it now? Why wait? Ask for next-day delivery! Each day, more and more people try online shopping. In fact, online sales have doubled in the last ten years. But not everyone is excited. Some scientists now say that online shopping is bad for the environment.
People are surprised to hear this. “They think, …I don?t need to drive, and the business doesn?t need to build a store, so there will be less pollution,?” says Nuria Prost, an
environmental scientist. “But it is not so simple. In fact, online shopping is wasteful. It also adds to air pollution.”
In truth, the Internet is not always as good a friend to the environment as it seems. For example, most people thought that the Internet would help offices use less paper and other materials. But paper use increased by 33 percent between 1986 and 1997. “Online shopping could have similarly negative effects,” says Nevil Cohen, a professor of environmental science.
Part of the problem is what people are buying these days. In the past, people bought things on the Internet that did not require much packing material, such as books and clothing. But now people also shop online for large, heavy products such as televisions, computers, and furniture. These products need to be packed in large amounts of plastic and paper. This creates a lot of waste.
Another problem caused by online shopping is air pollution. When customers buy products and ask for next-day delivery, companies often have to send them by air. Airplanes use much more fuel than cars and produce more carbon dioxide (CO2). When people buy a lot of different things from different online businesses, this creates even more travel by airplane.
Online product returns are also a problem. For example, an online shoe store may allow customers to return shoes without extra pay if they are the wrong size. This doubles the packing material and number of airplane trips required to sell one pair of shoes.
“If people want to protect the environment, they need to think before they shop,” says Prost. “People need to ask themselves: Is this exactly what I want? Do I really need it tomorrow, or can I wait?” Online stores can also charge（收费）customers for returns. This may make people shop more carefully. “Online shopping is fast and easy,” says Prost, “but we can?t forget the negative effects it has on the environment.”
48. Why does online shopping create a lot ofwaste?
A. Because companies charge more for product returns.
B. Because people buy too many things they don?t need.
C. Because paper use has increased by 33 percent from 1986 to 1997.
D. Because large, heavy products require much packing material.
49. What do companies do to meet the needs of the next-day delivery?
A. Prepare more products.
B. Get more workers to pack.
C. Send the products by air.
D. Open more stores in cities.
50. Prost probably agrees that ______.
A. people should drive to stores to buy things
B. online shopping adds pollution to the environment
C. online shopping saves more than shopping in a store
D. people can buy things online without careful consideration
51. What is probably thebest title of the passage?
A.A Good Deal to Make?
B. A Different Lifestyle to Keep?
C. A Cleaner Way to Shop?
D. A New Business to Start?
D
“You expect your friends to see you in a positive manner, but they also are observers of the personalities that could cause you an early death,” said Joshua Jackson, an assistant professor of psychology in Arts & Sciences.
Published in the journal Psychological Science, the study shows that your personality at an early age can predict how long you will live across 75 years and that close friends are usually better than you at recognizing these traits.“Our study shows that people are able to observe and evaluate（评价）a friend?s personality exactly enough to predict early death years down the road,” Jackson said. “It suggests that people are able to see important characteristics related to health even when their friends were, for the most part, healthy a nd many years from death.”
While other studies have shown that a person?s view of his or her own personality can be helpful in evaluating death risks, there has been little research on whether a close friend?s personality evaluation might also predict the chances of a long life.
To explore this question, Jackson and colleagues analyzed data（数据）from a longitudinal study that in the 1930s began following a group of young people in their mid-20s.The study included wide-ranging data on participant（参与者）personalities, both self-reported and as reported by close friends.
Using information from follow-up studies and searches of death certificates（证书）, Jackson and colleagues were able to record dates of death for all but a few study participants. Peer（同龄人）evaluations of personality were stronger predictors of death risks than were self-evaluations of personality.
“There are two possible reasons for the advantage of peer evaluations over self- evaluations,” Jackson said.“First, friends may see something that you miss; they may have some insight that you do not. Second, because people have several friends, we are able to average the characteristics of any one friend to get a more trustworthy evaluation of personality. With self-reports, people may miss certain sides of themselves and we are not able to counteract（抵抗）that because there is only one you, only one self-report.”
The study also shows some gender differences in self-evaluation: Men?s sel f-evaluations of personality were somewhat useful in predicting their lifespans（寿命）, whereas the self-reports of women had little predictive value.
“This is one of the longest studies in psychology,” Jackson said. “It shows how important personality is in influencing important life outcomes like health, and that information from friends can play a critical role in understanding a person?s health issues.
52. What can we learn fromParagraph 2?
A. People?s health is related to their friends.
B. Friends can predict lifespans better than us.
C. An early personality evaluation helps us live longer.
D. The study shows most people can live across 75 years.
53. The underlined word “insight”in Paragraph 6 probably mean s “_______”.
A. advice
B. influence
C. imagination
D. understanding
54. Which of the following is TRUE according to the passage?
A. People with more close friends have better personalities.
B. Self-evaluations have advantages over peer evaluations.
C. Men predict their lifespans more exactly than women.
D. The findings are based on participants? disease data.
55. What can we infer from the last paragraph?
A. Friends? personality evaluations can help recognize health risks.
B. Best friends play an important role in treating certain diseases.
C. Psychology studies may influence personality development.
D. Personality has little important effect on people?s health.
七、阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。每
个选项只能用一次。（共10分，每小题2分）
The Same But Different
Maggie and Sarah are twin sisters. They were born just a few
minutes apart, and they look exactly alike. They both have blonde hair
and green eyes. 56 . Sometimes other students at school have a
hard time telling them apart.
Maggie and Sarah like going to the same school.This is because
they are not just twin sisters, but best friends too.They have a lot in
common. 57 . Both girls spend a lot of time together with their
family, and they both like to play with their dog, Callie.
58 . Maggie likes to play sports. She is on a soccer team and a basketball team. Sarah doesn?t really like sports. She likes to dance.
There are other differences between them too. 59 . Maggie likes to read mystery books, but Sarah likes to read books about animals. Maggie gets better grades in reading and Spanish, but Sarah gets better grades in math and science.
Everyone is different in her or his own way.Maggie and Sarah like being different from
Do you worry about your health? Have you tried to run or walk for exercise and then quit? If you answer yes, you should try a new type of exercise: aquatic exercise. Aquatic exercise is a kind of exercise you do in a swimming pool. For example, you can run, walk, or even do a mind-body practice, such as yoga.
More and more people are trying aquatic exercise. In the United States, the number has grown by 25% in recent years. People in other countries are also doing aquatic exercise more frequently.
Aquatic exercise has many benefits. First of all, it feels easier than exercising on land. Why? You weigh about 90% less in the pool. It is also better for your knees than running or walking.
Aquatic exercise feels easy, but you still burn calories（卡）. Water is 1,000 times thicker and heavier than air. In the same amount of time, you can burn more calories in the pool than in the gym. That?s because it takes more energy to move in the water.
But what if you are scared of the water? No problem! There is nothing to worry about. Aquatic exercise is safe and easy to learn. It doesn?t require any special skills. For most kinds of
aquatic exercise, you don?t even need to know how to swim.
In fact, most people say they feel more relaxed in the water. They stop thinking about the things that make them anxious. The cool and quiet environment makes them exercise more.
Aquatic exercise is suitable for everyone. You can do it at any age. It can even help people who hav e been hurt in accidents. With aquatic exercise, they can move in ways they can?t on land. For example, some people who can?t walk can walk and even run in the water.
So are you looking for a fun new way to improve your health? Why not try? Join the millions of people who are burning calories while keeping cool in the pool.
61. Where do people do aquatic exercise?
62. Why do people burn more calories while doing aquatic exercise?
63. Is it difficult to learn aquatic exercise?
64. Who is aquatic exercise suitable for?
65. What is the passage mainly about?
书面表达（共15分）
九、文段表达。（15分）
根据中文和英文提示，写一段意思连贯、符合逻辑、不少于50词的回信。信的开头和结尾已给出，其词数不计入所要完成的回信内。请不要写出你的校名和姓名。
66．假如你叫李华，你的美国朋友Emily 通过邮件想了解使你发生改变的人。请你谈谈她
/他是谁，发生了什么令你改变的事，以及你的感悟。
To Emily Emily
北京市海淀区初三数学一模试卷及答案 数 学 2015．5 一、选择题（本题共30分，每小题3分） 下面各题均有四个选项，其中只有一个．． 是符合题意的． 1．2015年北京市实施能源清洁化战略，全市燃煤总量减少到15 000万吨左右，将15 000用科学记数法表示应为 A ． 50.1510? B ．41.510? C ．51.510? D ．31510? 2．右图是某几何体的三视图，该几何体是 A. 三棱柱 B. 三棱锥 C. 长方体 D.正方体 3．如图，数轴上两点A ，B 表示的数互为相反数，则点B 表示的数为 2 A 0B A ．-1 B ．1 C ．-2 D ．2 4．某游戏的规则为：选手蒙眼在一张如图所示的正方形黑白格子纸（九个小正方形面积相等）上描一个点，若所描的点落在黑色区域，获得笔记本一个；若落在白色区域，获得钢笔一支．选手获得笔记本的概率为 A ． 12 B ．45 C ．49 D ．59 5．如图，直线a 与直线b 平行，将三角板的直角顶点放在直线a 上，若∠1=40°，则∠2等于 A ． 40° B ．50° C ．60° D ．140° 6．如图，已知∠AOB ．小明按如下步骤作图： （1）以点O 为圆心，适当长为半径画弧，交OA 于D ，交OB 于点E ． （2）分别以D ，E 为圆心，大于1 2 DE 的长为半径画弧，两弧在∠AOB 的内部相交于点C ． （3）画射线OC ． 根据上述作图步骤，下列结论正确的是 A ．射线OC 是AO B ∠的平分线 B ．线段DE 平分线段OC b a 2 1
C ．点O 和点C 关于直线DE 对称 D ．O E =CE 7．某次比赛中，15名选手的成绩如图所示，则 这15名选手成绩的众数和中位数分别是 A ．98，95 B ．98，98 C ．95，98 D ．95，95 8. 甲骑车到乙家研讨数学问题，中途因等候红灯停止了一分钟，之后又骑行了1.2千米到达了乙家．若甲骑行的速度始终不变，从出发开始计时，剩余的路程S （单位：千米）与时间t （单位：分钟）的函数关系的图象如图所示，则图中a 等于 A ．1.2 B ．2 C ．2.4 D ．6 9．如图，⊙O 的直径AB 垂直于弦CD ，垂足为E .若60B ∠=?，AC =3，则CD 的长为 A ． 6 B ． C D ．3 10．小明在书上看到了一个实验：如右图，一个盛了水的圆柱形容器内，有 一个顶端拴了一根细绳的实心铁球，将铁球从水面下沿竖直方向慢慢地匀速向上拉动.小明将此实验进行了改进，他把实心铁球换成了材质相同的别的物体，记录实验时间t 以及容器内水面的高度h ，并画出表示h 与t 的函数关系的大致图象.如左下图所示.小明选择的物体可能是 二、填空题（本题共18分，每小题3分） 11．分解因式：32a ab -=____________． 12．写出一个函数y kx =（0k ≠），使它的图象与反比例函数1 y x =的图象有公共点，这个函数的解析式为___________． 13 ．某学习小组设计了一个摸球试验，在袋中装有黑，白两种颜色的球，这些球的形状大小 A B C D S /千米
海 淀 区 九 年 级 第 二 学 期 期 中 练 习 2014．5 一、选择题（本题共32分，每小题4分） 1．13 -的绝对值是 A ． 3- B ． 3 C ． 13 - D ． 1 3 2． 据教育部通报，2014年参加全国硕士研究生入学考试的人数约为1720000． 数字1720000用科学记数法表示为 A ．517.210? B ．61.7210? C ．51.7210? D ．70.17210? 3．下列图形中，既是轴对称图形又是中心对称图形的是 A B C D 4．一个不透明的盒子中放有4个白色乒乓球和2个黄色乒乓球，所有乒乓球除颜色外完全相 同，从中随机摸出1个乒乓球，摸出黄色乒乓球的概率为 A ．23 B ．12 C ．13 D ．1 6 5．如图，AB 为⊙O 的弦，OC ⊥AB 于C ，AB=8，OC =3，则⊙O 的半径长为 A ．3 C ．4 D ．5 6．下表记录了甲、乙、丙、丁四名跳远运动员选拔赛成绩的平均数x 与方差2 s ： 根据表中数据，要从中选择一名成绩好又发挥稳定的运动员参加比赛，应该选择 A ．甲 B ．乙 C ．丙 D ．丁
7．如图，在ABCD 中，∠ABC 的平分线交AD 于E ，∠BED=150°，则∠A 的大小为 A ．150° B ．130° C ．120° D ．100° 8．如图，点P 是以O 为圆心， AB 为直径的半圆的中点，AB=2，等腰直角三角板45°角的顶点与点P 重合， 当此三角板绕点P 旋转 时，它的斜边和直角边所在的直线与直径AB 分别相交于C 、D 两点．设线段AD 的长为x ，线段BC 的长为y ，则下列图象中，能表示y 与x 的 函数关系的图象大致是 A B C D 二、填空题（本题共16分，每小题4分） 9．分解因式：24xy x -= ． 10．已知关于x 的方程 220x x a -+=有两个不相等的实数根，则a 的取值范围是_________． 11．如图，矩形台球桌ABCD 的尺寸为2.7m ?1.6m ，位于AB 中点处的台球E 沿直线向BC 边上的点F 运动，经BC 边反弹后恰好落入点D 处的袋子中，则BF 的长度为 m. E D C B A F E D C B A 1.6m 2.7m
海淀区高三年级第二学期期中练习 英语2015.04 本试卷共12页，共150分。考试时长120分钟。 注意事项：1．考生务必将答案答在答题卡上，在试卷上作答无效。 2．答题前考生务必将答题卡上的姓名、准考证号用黑色字迹的签字笔填写。 3．答题卡上选择题必须用2B铅笔作答，将选中项涂满涂黑，黑度以盖住框内字母为准，修改时用橡皮擦除干净。非选择题必须用黑色字迹的签字笔按照题号顺序在各题目的答题区域内作答，未在对应的答题区域内作答或超出答题区域作答的均不得分。 第一部分：听力理解（共三节，30分） 第一节（共5小题；每小题1.5分，共7.5分）听下面5段对话。每段对话后有一道小题，从每题所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你将有10秒钟的时间来回答有关小题和阅读下一小题。每段对话你将听一遍。 1. Where is the woman going? A. To a bank. B. To a mall. C. To a street. 2. When will the meeting be held? A. This afternoon. B. Tomorrow. C. Next week. 3. What are the speakers talking about? A. Job. B. Salary. C. Travel. 4. What is the woman doing? A. Asking for permission. B. Making a complaint. C. Ordering a dish. 5. How much will the man pay for the apples? A. $ 1. B. $ 75. C. $ 5. 第二节（共10小题；每小题1.5分，共15分）听下面4段对话或独白。每段对话或独白后有几道小题，从每题所给的A、B、C三个选项中选出最佳选项。听每段对话或独白前，你将有5秒钟的时间阅读每小题。听完后，每小题将给出5秒钟的作答时间。每段对话或独白你将听两遍。 听第6段材料，回答第6至7题。 6. Wh at’s the purpose of the woman’s visit? A. Visiting friends. B. Sightseeing. C. Business. 7. Where does the conversation take place? A. At the customs. B. At the police office. C. At the hotel. 听第7段材料，回答第8至9题。 8. Which section does the man show most interest in the newspaper? A. News. B. Sports. C. World affairs. 9. What newspaper does the woman usually buy? A. A local one. B. A national one. C. An international one. 听第8段材料，回答第10至12题。 10. What does the woman worry about the gym? A. The noise. B. The air. C. The crowd. 11. Why does the man go to the gym? A. To lose weight. B. To do exercise. C. To meet people. 12. What does the man suggest the woman do? A. Eat less. B. Set limits. C. Exercise properly. 听第9段材料，回答第13至15题。 13. Who is the speaker? A. A taxi driver. B. A police officer. C. A radio announcer. 14. What makes driving a taxi a hard job in London? A. Bad traffic condition. B. Confusing street names. C. Lots of tests. 15. What will the speaker probably do if he’s stuck on the road in a taxi? A. Have a map ready. B. Be understanding. C. Change directions. 第三节（共5小题；每小题1.5分，共7.5分）听下面一段对话，完成第16至20五道小题，每小题仅填写一个 ．．词。听对话 第一节单项填空（共15小题；每小题1分，共15分）从每题所给的A、B、C、D四个选项中，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。 21. Mary has her weakness, ______ that doesn’t mean she is not qualified for her job. A. and B. yet C. so D. or 22. _______ Chai Jing said in her video about the smog has caused public concern. A. That B. Which C. How D. What 23. When I was pushed onto the stage, I felt all the eyes in the hall _______ me. A. through B. across C. into D. on 24. You ______ reach him on his mobile now—his mobile is still under repair. A. should n’t B. wouldn’t C. c an’t D. must n’t 25. The paper ox my grandmother ______ for me is my most valued birthday gift. A. cut B. will cut C. had cut D. cuts 26. —It i s said that John’s paper got an A+.—He deserves it. He _____a lot before he handed it in. A. prepared B. prepares C. had prepared D. has prepared 27.___ opinions on the schedule, we finally reached an agreement. A.Having exchanged B.Exchanging C.Exchanged D.To exchange 28. The long lasting cold current has brought _______winter in my memory to the east coast of the United States. A. the longer B. the longest C. a longer D. a long 29. Mike will become the first person in his family ______ college education. A. finished B. having finished C. finishing D. to finish 30. Prince William took a visit to the Forbidden City on Feb. 28, _______ emperors once lived. A. which B. whose C. where D. when 31. _______ she has earned her PhD, she wants to find a job with higher pay. A. As if B.Now that C. Even though D. In case 32. — Has James arrived at the hotel?— No, he ______ by fans for photographs at the airport. A. has surrounded B. would surround C. was surrounded D. is being surrounded
海淀区高三年级第二学期期中练习 数 学 （文科） 2014.4 本试卷共4页，150分。考试时长120分钟。考生务必将答案答在答题卡上，在试卷上 作答无效。考试结束后，将本试卷和答题卡一并交回。 一、选择题：本大题共8小题,每小题5分,共40分.在每小题列出的四个选项中,选出符合题目要求的一项. 1. 52i =- A.2i - B.2i + C.12i + D. 12i - 2. 已知集合{}{} 1,0,1,sin π,,A B y y x x A A B =-==∈= 则 A.{}1- B.{}0 C. { }1 D.? 3. 抛物线28y x =上到其焦点F 距离为5的点有 A.0个 B.1个 C. 2个 D. 4个 4. 平面向量,a b 满足||2=a ，||1=b ，且,a b 的夹角为60?，则()?+a a b = A.1 B. 3 C.5 D. 7 5. 函数()2sin f x x x =+的部分图象可能是 A B C D 6. 已知等比数列{}n a 的前n 项和为n S ，且1S ，22S a +，3S 成等差数列，则数列{}n a 的公比为 A ．1 B ．2 C ． 1 2 D ．3 7. 已知()x f x a =和()x g x b =是指数函数，则“(2)(2)f g >”是“a b >”的 A.充分不必要条件 B.必要不充分条件 C.充分必要条件 D. 既不充分也不必要条件 8. 已知(1,0)A ，点B 在曲线:G ln y x =上，若线段AB 与曲线:M 1 y x = 相交且交点恰为线段AB 的中点，则称B 为曲线G 关于曲线M 的一个关联点.那么曲线G 关于曲线M 的关联点的个数为 A ．0 B ．1 C ．2 D ．4 二、填空题:本大题共6小题,每小题5分,共30分. 9.双曲线22 1 3 x y m -=的离心率为2，则m =__________. O y x O y x O y x O y x
海淀区九年级第二学期期中练习 一、基础·运用（共24分） （一）选择。下面各题均有四个选项，其中只有一个符合题意，选出答案后在答题卡上用铅笔把对应题目的选项字母涂黑涂满。（共14分。每小题2分） 1．下列词语中加点字的读音完全正确的一项是 A．剔．除（tī）着．落（zháo）骇．人听闻（hài） B．吟．诵（yín）祈．祷（qí）载．歌载舞（zǎi） C．贮．藏（chǔ）慨．叹（kǎi）恰如其分． (fèn) D．宿．营（sù）憎恶．（wù）锐不可当．（dānɡ） 2．下列句子中有错别字的一项是 A．西山国家森林公园群峰叠翠，风光绮丽，真是人们登山赏景的好去处。 B．面对匆匆流逝的光阴，我们不应荒废时日，而应该充实而快乐地生活。 C．联谊会上即兴表演一个节目，对多才多艺的他来说是件轻而义举的事。 D．演唱结束了，听众还沉浸在美妙的歌声中，整个音乐厅一时变得鸦雀无声。 3．在校园文化节中，初三（1）班李晓与王晨代表年级参加了学校的辩论赛。李晓的活泼诙谐赢得了观众的阵阵掌声，王晨的冷静严谨也获得了评委们的一致赞扬。比赛结束后，学校决定让两人组队参加区中学生辩论赛。同学们纷纷评价李晓和王晨的组合特点。评价最恰当的一句是 A．同学甲：他们俩真是相得益彰！ B．同学乙：他们俩可谓尺有所短，寸有所长。 C．同学丙：他们俩不能不说是尺有所短，寸有所长。 D．同学丁：他们俩难道不是相得益彰吗？ 4．在下面语段中，依次填入关联词语最恰当的一项是 用黑色的墨水在白色的纸、绢上作画，这是中国画家所钟情的“黑白世界”。黑白世界，对中国人来说，它没有绚烂富丽的颜色，它的水墨颜色最能表现自然的朴素本性，能够体现出画家追求自然妙趣的思想。水墨山水在中国绘画中占有很高的地位。 A．由于所以而且B．虽然但是所以 C．不仅而且因此D．因为所以而且
海淀区高三年级第二学期期中练习 理科综合能力测试 2015.4 生物 第一部分（选择题共30分） 1.大肠杆菌和酵母菌细胞中都存在的生命活动是 A.线粒体内膜上O2和[H]结合生成水 B.mRNA通过核孔从细胞核进入细胞质 C.以亲代DNA为模板合成子代DNA D.纺锤丝牵引染色体移向细胞两极 2.下列关于人在夏季进行快走、慢跑等有氧运动时，机体不会 ．．发生的是 A.产生大量乳酸，血浆pH明显降低 B.抗利尿激素分泌增加，尿液生成减少 C.通过神经调节，增加汗腺分泌活动 D.胰高血糖素分泌增加，维持血糖稳定 3. RuBP羧化酶催化C5与CO2结合生成C3。将某种植物叶片置于适宜的光照和温度条件下，测定不同的细胞间隙CO 2浓度下叶肉细胞中C5的含量，得到右图所示的结果。据图作 出的推测不合理 ．．．是 A. A→B，叶肉细胞吸收CO2速率增加 B. B→C，叶片的光合速率等于呼吸速率 C. A→B，暗（碳）反应消耗ATP的速率增加 D. B→C，RuBP羧化酶量限制了光合速率 4.传粉榕小蜂进入榕树的榕果内产卵繁殖并专一性地帮助传粉，非传粉榕小蜂也将卵产在榕果内但不帮助传粉，它们的产卵时间存在分化。若非传粉榕小蜂先进入榕果产卵，该榕果常常会脱落；若非传粉榕小蜂在传粉榕小蜂之后或同期进入榕果产卵，榕果会分泌特殊代谢物，导致这两种榕小蜂幼体的发育均受到影 响。下列相关叙述不正确 ．．．的是 A.榕树和传粉榕小蜂互利共生系统是协同进化的结果 B.传粉榕小蜂与非传粉榕小蜂的数量均会周期性波动 C.榕果的脱落可有效地限制非传粉榕小蜂的种群密度 D.传粉榕小蜂与非传粉榕小蜂竞争会导致该系统崩溃 5.下列实验准备工作中合理的是 A.为了倒平板将已凝固的固体培养基加热熔化 B.为了恢复干酵母的活力将其用沸水处理 C.为观察植物有丝分裂准备洋葱鳞片叶 D.为双缩脲试剂鉴定蛋白质的实验准备沸水浴 第二部分（非选择题共50分） 29.（16分） 为研究油菜素内酯（BR）在植物向性生长中对生长素（IAA）的作用，科研人员以拟南芥为材料进行了如下实验。 （1）BR作为植物激素，与IAA共同________植物的生长发育。
2014北京海淀高考一模语文试题 一、本大题共7小题，共17分。 阅读下面文字，按要求完成1-6题。 有一天，忽然意识到，古人比今人多一股冲动：逢高即上，遇巍则攀。奇峰巨顶自不必说，即便丘峦高阁，他们也要上去站一站，“倚槛苍茫千古事，①_ ”，临风凭栏，感慨一番。所以，凡山亭江楼，词赋楹句总是爆满。王勃的《滕王阁序》、陈子昂的《登幽州台歌》、崔颢的《黄鹤楼》、王安石的《登飞来峰》……皆为“高高在上”所得。在古人那儿，登高眺远，②。“前不见古人，后不见来者。念天地之悠悠，独怆然而涕下。”高，带来大势大象，带来疏旷与飘逸，带来不羁与宏放，带来对生命时空的全景式阅读。因此于诗家墨客而言，“高处”具有强烈的召唤力，成了【】千年的诱惑。然而，“登高”又并非文人独嗜，百姓对此亦兴味索然，尤其在九九重阳节这个特殊的日子里，更是乐此不疲。秋收毕，仓廪实，人心悦，少不了邀友约醉，醍醐一场。秋高气爽、丹桂飘香的【】，若不去登高望远，游目骋怀，实在辜负天地、有愧人生。 古人登高的去处，一般是山、塔、楼，所以，在一座古城，大凡能将风景揽入怀中的高处，几朝下来，皆成了名胜。“江南三大楼”之黄鹤楼、岳阳楼、滕王阁，皆受驱于重阳雅集、登高览景的欲望，一旦矗起，则声名大噪，“游必于是，宴必于是”。因为古人认为自己是自然之子，他们心目中有“高”，他们崇高、尊高、仰高。 从“登高”意义上说，“重阳”几乎是个绝版的节日，今人仅视为“敬老节”，无疑让它的美折损大半，伤了筋，动了骨。 1.填入文中两处【】内词语的字形和加点字的读音全都正确的一项是(2分) D A 良辰怆(chuàng)然召唤 B 怆然召唤 C 风靡怆然召(zhào)唤 D 风靡良辰怆(chuàng)然召(zhào)唤 2.文中加点的词语使用有误的一项是(2分) A A 兴味索然 B 乐此不疲 C 游目骋怀 D 声名大噪 兴味索然：一点兴趣也没有。索然：毫无兴趣的样子。 乐此不疲：因酷爱干某事而不感觉厌烦。形容对某事特别爱好而沉浸其中。 游目骋怀：游目:远眺;骋怀:放开胸怀,往远处想。纵目四望,开阔心胸。 声名大噪：由于名声高而引起人们的极大关注。 3.将下列句子填入文中横线①处，对仗最工整的一项是(3分) B A 天开美景风云静 B 过江多少六朝山 C 爽气西来两袖清 D 座揽清辉万川月 4.填入文中横线②处的句子与上下文衔接最恰当的一项是(2分) C A 既是感悟生命、孜求彻悟的仪式，又是放牧视野、抒发情怀的方式。 B 既是感悟生命、抒发情怀的方式，又是放牧视野、孜求彻悟的仪式。 C 既是放牧视野、抒发情怀的方式，又是感悟生命、孜求彻悟的仪式。 D 既是放牧视野、孜求彻悟的仪式，又是感悟生命、抒发情怀的方式。 5.下列有关文学常识和文化常识的表述，不正确的一项是(2分) A A ，他们开创了高峻雄浑、刚健有力的新诗风。应为“卢照邻” B 在《游褒禅山记》中感慨“世之奇伟、瑰怪、非常之观，常在于险远”的王安石是“唐宋八大家”之一。 C 江南三大楼吸引了众多文人吟诗作赋，其中关于岳阳楼的诗文就有杜甫的《登岳阳楼》、范仲淹的《岳阳楼记》等。
2015海淀语文一模材料作文简析与范文 【试题再现】 ①中国宣纸“轻似蝉翼白如雪”，有着“纸寿千年”的美誉。它轻薄，却能承载文字、文化的厚重；它素朴，却能呈现心灵、精神的绚烂。轻中有重，朴中见华，又何止宣纸呢？ 上面的文字引发了你怎样的联想和思考？请自选角度，自拟题目，自定文体（诗歌除外），写一篇不少于700字的文章。 ②2014年12月，《诗刊》杂志社、中国人民大学文学院和凤凰网读书频道联合举办了一场以“日常生活，惊心动魄”为主题的诗歌朗诵会，农妇、理发师、快递员、私企员工、煤矿工人，是这场朗诵会的主角。他们朗诵自己的作品，表达对诗歌的热爱和对生活的感悟。 上面的文字引发了你怎样的联想和思考？请自选角度，自拟题目，自定文体（诗歌除外），写一篇不少于700字的文章。 【写作提示】 文题①抓关键词：“轻中有重，朴中见华”。立意：围绕关键词展开相似联想——物、人、事（物：茶、筷子、信笺、草木、照片……人：由一人外在的“轻”“朴”了悟其人内心的“重”“华”……事：由表面浅层的“轻”“朴”识见内在深层的“重”“华”……）。 文题②可用“由果溯因”方法立意：“为什么这些人做主角的朗诵会主题叫‘日常生活、惊心动魄’”？或“为什么朗诵会这些人是主角？”原因是：“生活即诗”“诗源于生活”“珍视生活，生活就惊心动魄”“寻常是诗”“艺术本植根于生活百态”“诗人等于凡人加情怀”“艺术本就该有泥土气”…… 【优秀作文】——文题① 粉彩浓淡总相宜一类上 曙红、藤黄、花青，钛白……颜料盒上，这一个个古朴而灵动的名字让我心动不已。是了，就是这些粉彩，不起眼的胶块遇水却成就难以复制的华美，似要化在风中的矿质粉末却在中华文化中留下力压千钧的一笔，轻中有重，朴中见华，是传统粉彩的诠释。 我有幸学习过工笔花鸟，不大的画室中充盈着墨香。老先生铺开一张宣纸，提一口气又按下头去，在花瓣边缘涂一层墨色，形成明灭有致的阴影。再刷一层白浆，点一滴曙红，随花脉晕开。动作小心翼翼，似怕气息吹乱了花的神韵。我看着单独成块的粉彩，经他调制，在不大的宣纸上染出无限春光，竟一时有些失语。冰心笔下“乐而不淫，哀而不伤”的西府海棠，静静地开在宣纸上。粉彩的修饰，让这树海棠从北宋一直开到眼前。 几代人画的，真都是那一树海棠吗？纸已不是那泛黄薄脆的纸，人也不是那徘徊树下咀嚼海棠深浅变化的少年。然而那儿块朴素得与石片无异的粉彩，却带着一缕取材自自然的原香，让海棠的那一缕风中浅笑，活到了今天。是以今人画海棠，仍能被工笔重彩的华贵，震到如痴如醉。粉彩的朴素中承载的，是美之华贵。
本试卷8页，共150分。考试时长150分钟。考生务必将答案答在答题卡上，在试卷上作答无效。考试结束后，将本试卷和答题卡一并交回。 一、本大题共7小题，共17分。阅读下面文字，按要求完成1-6题。 有一天，忽然意识到，古人比今人多一股冲动：逢高即上，遇巍则攀。奇峰巨顶自不必说，即便丘峦高阁，他们也要上去站一站，"倚槛苍茫千古事，____①____"，临风凭栏，感慨一番。所以，凡山亭江楼，词赋楹句总是爆满。王勃的《滕王阁序》、陈子昂的《登幽州台歌》、崔颢的《黄鹤楼》、王安石的《登飞来峰》……皆为"高高在上"所得。在古人那儿，登高眺远，_____②____。"前不见古人，后不见来者。念天地之悠悠，独怆然而涕下。"高，带来大势大象，带来疏旷与飘逸，带来不羁与宏放，带来对生命时空的全景式阅读。因此于诗家墨客而言，"高处"具有强烈的召唤力，成了【】千年的诱惑。然而，"登高"又并非文人独嗜，百姓对此亦兴味索然，尤其在九九重阳节这个特殊的日子里，更是乐此不疲。秋收毕，仓廪实，人心悦，少不了邀友约醉，醍醐一场。秋高气爽、丹桂飘香的【】，若不去登高望远，游目骋怀，实在辜负天地、有愧人生。古人登高的去处，一般是山、塔、楼，所以，在一座古城，大凡能将风景揽入怀中的高处，几朝下来，皆成了名胜。"江南三大楼"之黄鹤楼、岳阳楼、滕王阁，皆受驱于重阳雅集、登高览景的欲望，一旦矗起，则声名大噪，"游必于是，宴必于是"。因为古人认为自己是自然之子，他们心目中有"高"，他们崇高、尊高、仰高。从"登高"意义上说，"重阳"几乎是个绝版的节日，今人仅视为"敬老节"，无疑让它的美折损大半，伤了筋，动了骨。 1.填入文中两处【】内词语的字形和加点字的读音全都正确的一项是（2分） A.风糜良辰怆（chuàng）然召（zhāo）唤 B.风糜良晨怆（chuāng）然召（zhāo）唤 C.风靡良晨怆（chuāng）然召（zhào）唤 D.风靡良辰怆（chuàng）然召（zhào）唤 2.文中加点的词语使用有误的一项是（2分） A.兴味索然 B.乐此不疲 C.游目骋怀 D.声名大噪 3.将下列句子填入文中横线①处，对仗最工整的一项是（3分） A.天开美景风云静 B.过江多少六朝山 C.爽气西来两袖清 D.座揽清辉万川月 4.填入文中横线②处的句子与上下文衔接最恰当的一项是（2分） A.既是感悟生命、孜求彻悟的仪式，又是放牧视野、抒发情怀的方式。 B.既是感悟生命、抒发情怀的方式，又是放牧视野、孜求彻悟的仪式。 C.既是放牧视野、抒发情怀的方式，又是感悟生命、孜求彻悟的仪式。 D.既是放牧视野、孜求彻悟的仪式，又是感悟生命、抒发情怀的方式。 5.下列有关文学常识和文化常识的表述，不正确的一项是（2分） A.《滕王阁序》的作者王勃，与杨炯、陈子昂、骆宾王合称为"初唐四杰"，他们开创了高峻雄浑、刚健有力的新诗风。 B.在《游褒禅山记》中感慨"世之奇伟、瑰怪、非常之观，常在于险远"的王安石是"唐宋八大家"之一。 C.江南三大楼吸引了众多文人吟诗作赋，其中关于岳阳楼的诗文就有杜甫的《登岳阳楼》、范仲淹的《岳阳楼记》等。 D."待到重阳日，还来就菊花""遥知兄弟登高处，遍插茱萸少一人"中提及的赏菊、登高、插茱萸都是重阳节的习俗。 6.对"‘重阳’几乎是个绝版的节日"的原因理解不正确的一项是（3分） A.今人少了登高赋诗的冲动和雅兴 B.现在少了百姓庆丰、朋友相聚的欢乐
海淀区高三年级第二学期期中练习 物理学科参考答案 2014.4 （共120分） 选择题（共48分，13题~20题每题6分） 13．B 14．D 15．B 16．A 17．D 18．C 19．D 20．A 21．（18分） （1）（共6分） ①bda （2分，说明：没有排序扣1分，漏选、错选不得分） ②B （2分） ③9500（2分） （2）（共12分） ① A ．adf （3分） B ．2 224t L n π （3分） C ．偏小（2分） ② A ．2.0 （2分） B ．9.76（2分） 22．(16分) 解：（1）滑动摩擦力 f=μmg （1分） 设滑块的加速度为a 1，根据牛顿第二定律 F-μmg =ma 1 （1分） 解得 a 1=9.0m/s 2 （1分） 设滑块运动位移为0.50m 时的速度大小为v ，根据运动学公式 v 2=2a 1x （2分） 解得 v =3.0m/s （1分） （2）设滑块通过B 点时的动能为E kB 从A 到B 运动过程中，依据动能定理有 W 合=ΔE k F x -fx 0= E kB ， （4分） 解得 E kB =4.0J （2分） （3）设滑块沿圆弧轨道上升过程中克服摩擦力做功为W f ，根据动能定理 -mgh -W f =0-E kB （3分） 解得 W f =0.50J （1分） 23．（18分） 解：（1）烟尘颗粒在通道内只受电场力的作用，电场力F=qE （1分） 又因为 h U E = （1分） 设烟尘颗粒在通道内运动时加速度为a ，根据牛顿第二定律有 ma h qU =（2分） 解得 22m/s 100.4?=a ，方向竖直向下 （2分）
2015年北京海淀高三一模理综试题及答案 北京海淀区高三年级第二学期期中练习 物理 2015.04 13．下列说法中正确的是 A ．当物体的温度升高时，物体内每个分子热运动的速率一定都增大 B ．布朗运动间接反映了液体分子运动的无规则性 C ．分子间的吸引力总是大于排斥力 D ．物体运动得越快，其内能一定越大 14．在下列核反应方程式中，表示核聚变过程的是 A ．n 3Kr Ba n U 108936144561023592 ++→+ B ． e Pa Th 012349123490 -+→ C ．238234 492 90 2U Th He → + D ． n He H H 1 0422131 +→+ 15．a 、b 两种单色光以相同的入射角从空气斜射向某种玻璃中，光路如图所示。关于a 、b 两种单色光，下列说法中正确的是 A ．该种玻璃对b 光的折射率较大 B ．b 光在该玻璃中传播时的速度较大 C ．两种单色光从该玻璃中射入空气发生全反射时，a 光的临界角较小 D ．在同样的条件下，分别用这两种单色光做双缝干涉实验，b 光的干涉图样的相邻条纹间距较大 16．一简谐机械横波沿x 轴传播，波速为2.0m/s ，该波在t=0时刻的 波形曲线如图甲所示，在x=0处质点的振动图像如图乙所示。则下列说法中正确的是 A ．这列波的振幅为60cm B ．质点的振动周期为4.0s C ．t=0时，x=4.0m 处质点比x=6.0m 处质点的速度小 D ．t=0时，x=4.0m 处质点沿x 轴正方向运动 空气 玻璃 a b 0 30 -30 y/cm t/s T T/2 乙 甲 0 30 -30 y/cm x/m 4 8 2 6
海淀区高三年级第二学期期中练习 文科综合能力测试2014.4本试卷共12页，共300分。考试时长150分钟。考生务必将答案答在机读卡和答题纸上，在试卷上作答无效。 第一部分（选择题共140分） 本部分共35小题，每小题4分，共140分。在每小题列出的四个选项中，选出最符合题目要求的一项。 南锣鼓巷是北京最古老的街区之一，富有老北京风情，近年已成为北京旅游热点之一。图1为南锣鼓巷街区及四合院示意图。读图，回答第1题。 图1 1.图中 A.从南锣鼓巷南口行至北口最短距离大约为1200米 B.按行走路线从南锣鼓巷北口向南再向东可至菊儿胡同东口 C.四合院封闭的围墙与北京夏季多雨的气候特征紧密相关 D.四合院的建筑结构体现了中国传统文化的开放和包容 自然环境中的物质处于不断的循环运动 中。图2中序号代表碳循环的过程。读图，回 答第2、3题。 2.图中 A．①开采矿产来自岩石圈，对水圈无影响 B．②排放的气体是破坏臭氧层的主要物质 C．③可降低温室气体浓度，减弱温室效应 D．④需要在变质或者重熔再生作用下进行 3.若大气中CO2浓度增加，则 A．太阳活动对地球的影响减弱 B．大气对地面辐射的吸收增强 C．石灰岩地貌的侵蚀作用变缓图2 D．亚寒带针叶林向较低纬扩展 4.我国华北平原某地海拔高度为100米。下表为该地某日某时段垂直方向的气温实测数据。
该日最可能出现的天气是 A ．霾 B ．寒潮 C ．沙尘暴 D ．强雷雨 图3为世界某区域图。读图，回答第5、6题。 5.图中 A.年降水量分布总趋势是自西向东逐渐递增 B.甲地因深居内陆，年降水量低于300mm C.乙地终年盛行西北风，降水较丰富 D.东北部年等降水量线稀疏，降水变化大于西南部 6．图示区域 A.南部的海峡连接太平洋与印度洋两海区 B.西部沿海受寒流影响，形成世界著名渔场 C.丙地自然带类型为温带落叶阔叶林带 D.丁地常年受赤道低气压带控制，终年多雨 图3 图4为北半球某区域地形地质剖面图。读图，回答第7、8题。 图4 7．图中 A ．甲处的地质构造为向斜 B ．乙处岩石由岩浆喷出冷却凝结形成 C ．①-②-③岩层年代由老到新 D ．地表形态由内、外力共同作用形成 8.图中河流 A.在丙处常形成洪积、冲积扇 B.丁处河岸以沉积作用为主 C.丙、丁间河道弯曲，水流平稳 D.冬、春季有明显的凌汛现象 图5表示某天气系统通过图示区域时的相关气象资料。读图，回答第9、10题。 海拔（米） 100 500 1000 1500 气温（0C ） 2.1 2.2 0.9 -5.5
2015年北京海淀区高三年级第二学期期中练习(一模) 物理学科部分 2015、04 13.下列说法中正确得就是 A.当物体得温度升高时,物体内每个分子热运动得速率一定都增大 B.布朗运动间接反映了液体分子运动得无规则性 C.分子间得吸引力总就是大于排斥力 D.物体运动得越快,其内能一定越大 14.在下列核反应方程式中,表示核聚变过程得就是 A. n 3Kr Ba n U 108936144561023592 ++→+ B. e Pa Th 012349123490 -+→ C. 238234 492 90 2U Th He → + D. n He H H 1 04 22 131+→+ 15.a 、b 两种单色光以相同得入射角从空气斜射向某种玻璃中,光路如图所示。关于a 、b 两种单色光,下列说法中正确得就是 A.该种玻璃对b 光得折射率较大 B.b 光在该玻璃中传播时得速度较大 C.两种单色光从该玻璃中射入空气发生全反射时,a 光得临界角较小 D.在同样得条件下,分别用这两种单色光做双缝干涉实验,b 光得干涉图样得相邻条纹间距较大 16.一简谐机械横波沿x 轴传播,波速为2、0m/s,该波在t=0时刻得波形 曲线如图甲所示,在x=0处质点得振动图像如图乙所示。则下列说法中正确得就是 A.这列波得振幅为60cm B.质点得振动周期为4、0s C.t=0时,x=4、0m 处质点比x=6、0m 处质点得速度小 D.t=0时,x=4、0m 处质点沿x 轴正方向运动 17.如图所示,甲、乙两个质量相同、带等量异种电荷得带电粒子,以不 同得速率经小孔P 垂直磁场边界MN ,进入方向垂直纸面向外得匀强磁场中,在磁场中做匀速圆周运动,并垂直磁场边界MN 射出磁场,半圆轨迹如图中虚线所示。不计粒子所受重力及空气阻力,则下列说法中正确得就是 A.甲带负电荷,乙带正电荷 B.洛伦兹力对甲做正功 C.甲得速率大于乙得速率 空气 玻璃 a b 0 30 -30 y/cm t/s T T/2 乙 甲 乙 P B M N 甲 30 -30 y/cm x/m 4 8 2 6
2014北京市海淀区高考化学一模试题及答案解析 2014.4.9 答题可能用到的相对原子质量：H-1 N-14 O-16 6.下列用品的主要成分及用途对应不正确．．．的是 ．． A ．碳酸的酸性强于苯酚：CO 2+H 2O+O - OH +HCO 3- B ．工业上用氧化铝冶炼金属铝：2Al 2O 3(熔融) === 4Al + 3O 2↑ C ．浓硫酸具有强氧化性：C + 2H 2SO 4（浓）=== 2SO 2↑+ CO 2↑+ 2H 2O D ．金属铜能溶解于稀硝酸：Cu + 4H ++ 2NO 3- === Cu 2++ 2NO 2↑+ 2H 2O 8.下列实验装置或操作正确的是 向容量瓶中转 移液体 实验室制取乙酸乙酯 实验室制乙烯 分离酒精和水 9.如图所示的钢铁腐蚀中，下列说法正确的是 电解 冰晶石 △
A．碳表面发生氧化反应B．钢铁被腐蚀的最终产物为FeO C．生活中钢铁制品的腐蚀以图①所示为主D．图②中，正极反应式为O2 + 4e- + 2H2O === 4OH- 10.下列颜色变化与氧化还原反应无关 ．．的是 A．将乙醇滴入酸性K2Cr2O7溶液中，溶液由橙色变为绿色 B．将SO2通入滴有酚酞的NaOH溶液中，溶液红色褪去 C．将H2C2O4溶液滴入酸性KMnO4溶液中，溶液紫色褪去 D．将乙醛加入新制Cu(OH)2悬浊液中并加热至沸腾，出现红色沉淀 11．实验： ①向2 mL 1 mol·L-1 NaBr溶液中通入少量氯气，溶液变为黄色； ②取①所得溶液滴加到淀粉KI试纸上，试纸变蓝； ③向①所得溶液继续通入氯气，溶液由黄色变成橙色。 下列分析不正确 ．．．的是 A．仅根据实验①能说明还原性：Br- > Cl-B．仅根据实验②能说明氧化性：Br2> I2 C．上述实验验证了Cl2、Br2、I2的氧化性相对强弱 D．向实验③所得溶液中加CCl4，充分振荡，下层为橙红色 12. 根据下列操作及现象，所得结论正确的是
海淀区高三年级2015-2016 学年度第二学期期中练习 数学试卷（理科）2016.4 本试卷共4 页，150 分．考试时长120 分钟．考生务必将答案答在答题卡上，在试卷上 作答无效．考试结束后，将本试卷和答题卡一并交回． 一、选择题共8 小题，每小题5 分，共40 分．在每小题列出的四个选项中，选出符合题目要求的一项． 1 ．函数() f x=） A．［0，＋∞） B．［1，＋∞） C．（－∞，0］ D．（－∞，1］ 2．某程序的框图如图所示，若输入的z＝i（其中i为虚数单位），则输出的S 值为（）A．－1 B．1 C．－I D．i 3．若x，y 满足 20 40 x y x y y -+≥ ? ? +-≤ ? ?≥ ? ，则 1 2 z x y =+的最大值为（） A．5 2 B．3 C． 7 2 D．4 4．某三棱锥的三视图如图所示，则其体积为（）
A B D 5．已知数列{}n a 的前n 项和为S n ，则“ {}n a 为常数列”是“*,n n n N S na ?∈=”的（ ） A ．充分不必要条件 B ．必要不充分条件 C ．充分必要条件 D ．既不充分也不必要条件 6．在极坐标系中，圆C 1 :2cos ρθ=与圆C 2:2sin ρθ=相交于 A ，B 两点，则｜AB ｜＝（ ） A ．1 B C D ． 2 7．已知函数sin(),0 ()cos(),0 x a x f x x b x +≤?=?+>?是偶函数，则下列结论可能成立的是（ ） A ．,44a b ππ = =- B ．2,36a b ππ= = C ．,36a b ππ== D ．52,63 a b ππ == 8．某生产基地有五台机器，现有五项工作待完成，每台机器完成每项工作后获得的效益值 如表所示．若每台机器只完成一项工作，且完成五项工作后获得的效益值总和最大，则下列叙述正确的是（ ） A ．甲只能承担第四项工作 B ．乙不能承担第二项工作 C ．丙可以不承担第三项工作 D ．丁可以承担第三项工作 二、填空题共6 小题，每小题5 分，共30 分． 9．已知向量(1,),(,9)a t b t == ，若a b ，则t ＝ _______． 10．在等比数列{}n a 中，a 2＝2，且 13115 4 a a +=，则13a a +的值为_______． 11．在三个数1 231,2.log 22 -中，最小的数是_______．
2014海淀区二模 一、选择题（本题共32分，每小题4分） 1．6-的相反数是 A ．16 - B ．16 C ．6- D ．6 2．2013年12月2日凌晨，承载了国人登月梦想的“嫦娥三号”在西昌卫星发射中心成功发射．在此次发射任务中，火箭把“嫦娥三号”送入近地点高度约210千米、远地点高度约368000千米的地月转移轨道．数字368000用科学记数法表示为 A ．36.8×104B ．3.68×106C ．3.68×105D ．0.368×106 3.如图是某个几何体的三视图，该几何体是 A ．长方体B ．圆锥C ．圆柱D ．三棱柱 4．如图，AB ∥CD ，点E 在CA 的延长线上. 若∠BAE =40°，则∠ACD 的大小为 A ．150° B ．140° C ．130° D ．120° 5．掷一枚质地均匀的正方体骰子，骰子的六个面上分别刻有1到6的点数，掷一次骰子，在骰子向上的一面上出现点数大于4的概率为 A ．16 B ．13 C ．12 D ．23 6．如图，四边形ABCD 是⊙O 的内接正方形，点P 是CD ⌒上不同于点C 的任意一点，则∠BPC 的大小是 A ．45° B ．60° C ．75° D ．90° 7．某次数学趣味竞赛共有10道题目，每道题答对得10分，答错或不答得0分，全班40名同学参加了此次竞赛，他们的得分情况如下表所示： 则全班40名同学的成绩的中位数和众数分别是 A ．75，70 B ．70 ，70C ．80，80 D ．75，80 8．如图1，AB 是半圆O 的直径，正方形OPNM 的对角线ON 与AB 垂直且相等，Q 是OP 的中点. 一只机器甲虫从点A 出发匀速爬行，它先沿直径爬到点B ，再沿半圆爬回到点A ， 俯视图左视图 主视图 E D C B A