哈尔滨市第六中学2009届高三第一次模拟考试
英语试题
I.
听力
第一节（共5小题；每小题1.5分，满分7.5分）
1. Why cannot
A. She’s on the way to office right now.
B. She’s answering another phone call.
C. She’s out to buy some lines.
2. What does the woman mean?
A. She is willing to let the man use her dictionary.
B. She doesn’t think the man needs the dictionary.
C. She wonders why the man wants to use her
dictionary.
3. How many books can the man borrow?
A. Twenty-five B. Five C. Twenty
4. Where is Mr. Wang now?
A. In
5. What will the woman have to do?
A. Use the tape herself B. Keep the tape for another week
C. Return the tape to the
man.
第二节（共15小题；每小题1.5分，满分22.5分）
听第6段材料，回答第6至8题。
6. What is the probable relationship between the two speakers?
A. Doctor and patient B. Lawyer and client
C.
Receptionist and patient
7. What is the man’s problem?
A. He has a stomachache B. He has chest pains
C. He
has a sore throat
8. When is the man going to Dr. Black’s office?
A. Right away B. In the afternoon C. At ten in the morning
听第7段材料，回答第9至11题。
9. Why does the man want to find a nurse?
A. He likes the nurse to
chat with his parents
B. His mother wants a nice
nurse to help her
C. He needs a nurse to look
after his sick father
10. What do you know about the man?
A. He never thought it’s so
difficult to find a nurse.
B. He doesn’t want his
mother herself to take care of his father
C. He cares more about his
father than about his mother
11. What can be inferred from the conversation?
A. The man’s mother used to
be a nurse
B. The man’s father has been
in hospital for a long time.
C. The man has interviewed
several nurses.
听第8段材料，回答第12至14小题。
12. What may be the man’s purpose according to the conversation?
A. He wants to find a
suitable job. B. He wants to
get a girlfriend.
C. He wants to marry the
woman.
13. What kind of people might the man prefer?
A. A serious person B. A practical person C. A rich person
14. What’s the man’s possible favor according to the conversation?
A. Sightseeing B. Running a restaurant C. Writing
听第9段材料，回答第15至17题。
15. Why does the woman want to travel after graduation?
A. To enrich her
experience B. To find a good job
while traveling
C. To see different places
described in the books
16. How
can we adapt to the changing environment according to the woman?
A. We should be independent B. We should be willing to
change
C. We should get to know different
people.
17.
What will the woman learn while traveling?
A. To help people B. To believe herself C. To value people
听第10段材料，回答第18至20题。
18. How
will buyers pay for items they have chosen on TV?
A. By making a phone call B. By charging them to a credit
card
C. By paying for them at the cashier’s.
19. Why
do some people prefer to shop in stores?
A. It’s taken as a way to relax B. They can shop
around the clock
C. Goods in store is a bit cheaper
20.
What can you infer from the text?
A. Store shopping will be replaced in
the future.
B. Store shopping and home shopping are
needed by different people.
C. Shopping on the Internet is
developing rapidly.
II. 单项选择
21. It is known that
water is not _____ endless resource, nor _____ that can be made once more.
A. the; 不填 B. an; one C. an;
that
D. 不填；one
22. I’m not sure
whether I will have anything else to do tomorrow. ____,I will try every
possible means to come to the party.
A. Even though B. Anyhow C. If so D. Instead
23. It is required
that the students ______ mobile phones in their school, so seldom ____ them
using one.
A. not use; will you see B. should not use; you will
see
C. don’t use; will you see D. not use; you will see
24. With the electric
map ______ in the car _____ the exact position, the driver can drive in the
right direction of the destination.
A. fixing; showing B.
fixed; shown
C. fixed; showing
D. fixing; shown
25. ?When did you last
hear ____ Jay?
--He phoned me this morning, and
we agreed____ a time and place to meet.
A. of; to B. about; with C. from; with D. from; on
26. ―Tom has missed yesterday’s class,
so ____ one example is necessary to get him to grasp this rule clearly.
A.
rather
than B. other than C. more than D. less than
27. He spent at least
as much time reading as you____ online yesterday.
A. had to chat B. do chatting C. had chatted D. did chatting
28. ?Do the students
learn any foreign language in your school?
- Yes, more than one____ taught in
this school.
A. language is B. language are C. language be D. languages are
29. It’s hard for him
to play against me. I’ve got nothing to play for, but for him, he needs to win
so ______.
A. far B. well C. little D. badly
30. ---You seem to get
lost. Need help?
--- _______.
A. Yes, give me a hand, please.
B. Help me find my bag, please.
C. I’m looking for the No.1 bus.
D. Yes, would you please help me
with the bag?
31. As the light
turned green, I stood for a moment, not ____, and asked myself what I was going
to do.
A. moved B. moving C. to move D. being moved
32. Without proper lessons, you could ____ a lot of bad habits when playing the piano.
A. give up B. catch up C. keep up D. pick up
33. At the sight of the policeman, ___from behind the door.
A. did the boy rush out B. did he sit down
C. out rushed the boy D. rushing out was the boy
34. He often speaks of the trouble he _____ to help the orphan.
A. had B. found C. made D. took
35. ---We didn’t find the Blacks ____ the lecture.
---No one had told them about _____ a lecture the following day.
A. to attend; there to be B. attending; there being
C. attended; there be D. attend; there was
III. 完形填空
I think the most basic and powerful way to connect to another person is to listen. Perhaps, the most important thing we ever give each other is our 36 , and especially if it’s given from our hearts.
When people are talking, 37 is no need to do anything but 38 them and take them in. Listen to what they are 39 . In most cases, 40 is more important than understanding. It has taken me a long time to believe in the 41 of simple saying “ I’m so sorry ” when some one is in pain.
One of my patients told me that when she tried to tell her story, people often 42 her to tell her that they once had 43 just like what happened to her. Finally, she 44 talking to most people.
45 , we connect to each other through listening. When we interrupt what someone is saying to let him or her know that we understand, we move the focus of attention to ourselves.
I have 46 learned to respond to someone’s 47 by just listening to him or her. In the old days, I used to 48 the tissue (纸巾). I realized that passing a person a tissue 49 be just another way to 50 them down and take them out of their experience of 51 . Now just listen. When they have cried all they 52 to cry, they find me there with them.
This simple thing has not been that easy to learn. It certainly went 53 everything I had been taught since I was very young. I 54 think that people listened only because they did not know the answer. But now I know that a loving 55 often has more power to comfort others than words.
36.
A. attention
B. love
C. minds
D. actions
37.
A. it
B. that
C. this
D. there
38.
A. receive
B. accept
C. get
D. bring
39.
A. speaking
B. talking
C. telling
D. saying
40.
A. discussing
B. doing
C. listening
D. hearing
41.
A. effort
B. power
C. treasure
D. strength
42.
A. interrupted
B. disturbed
C. asked
D. demanded
43.
A. everything
B. anything
C. something
D. nothing
44.
A. began
B. stopped
C. started
D. continued
45.
A. In fact
B. At length
C. As a result
D. In other words
46.
A. still
B. never
C. even
D. hardly
47.
A. anxiety
B. laughing
C. shouting
D. crying
48.
A. give off
B. reach for
C. reach out
D. give up
49.
A. might
B. will
C. had to
D. must
50.
A. break
B. put
C. pull
D. calm
51.
A. happiness
B. sadness
C. anger
D. delight
52.
A. try
B. manage
C. need
D. like
53.
A. against
B. for
C. out
D. with
54.
A. always
B. happened to
C. seldom
D. used to
55.
A. lecture
B. understanding
C. silence
D. act
IV. 阅读理解
A
I was doing some Christmas shopping in a toy store and decided to look at Barbie dolls for my nieces. A nicely dressed little girl was excitedly looking through the Barbie dolls as well. As she was looking, a little boy came to the Pokemon toys. He was dressed neatly, but his clothed were obviously old. He was with his father as well, and kept picking up the Pokemon video toys. Each time he picked one up and looked at his father, his father shook his head and said, “No.”
The little girl had chosen her Barbie. However, she stopped and was watching them. Rather dejectedly, the boy had to give up the Pokemon toys and choose something else. The little girl put her Barbie back on the shelf, and ran over to the Pokemon toys. She excitedly picked up one and raced towards the checkout. I picked up my purchases and got in line behind them. Then, much to the little girl’s delight, the little boy and his father got in line behind me. After the toy was paid for and bagged, the little girl handed it back to the cashier (收银员) and whispered something in her ear. The casher smiled and put the package under the counter.
I paid for my purchases and was rearranging things when the little boy came up to the cashier. The cashier checked his purchases and said, “Congratulations, you are my hundredth customer today, and you win a prize!” With that, she handed the little boy the Pokemon toys, and he could only stare in surprise. It was exactly what he had wanted!
The little girl and her father had been standing at the doorway during all of this. Then they walked out. As I walked back to my car, I heard the father ask his daughter why she had done that. I’ll never forget what she said to him. “Daddy, didn’t Grandparents want me to buy something that would make me happy?” He said, “Of course they did, honey.” To which the little girl replied, “ Well, I just did!”
I feel very shocked to have witnessed the true spirit of Christmas in that boy store, in the form of a little girl who understands more about the meaning of this festival than most adults I know.
56. The underlined word “dejectedly” in the second paragraph probably means _____.
A. delightedly B. disappointedly C. excitedly D. unexpectedly
57. How did the little boy get the Pokemon toys?
A. His father bought him the Poknemon toys.
B. Fortunately, he was the hundredth customer and won the Poknemon toys.
C. The cashier felt sympathy for the little boy and gave him the Poknemon toys.
D. The little girl bought the Poknemon toys for him.
58. What did the little girl mean when saying “Daddy, didn’t Grandparents want me to buy something that would make me happy?”
A. Her Grandparents wanted her to be happy.
B. Making the little boy happy made her happy.
C. The Poknemon toys made her happy.
D. Her Grandparents hoped that she could help others.
59. Which of the following statements is NOT true according to the passage?
A. the story happened before Christmas.
B. The little boy had no enough money to buy the Poknemon toys.
C. Although the little girl liked the Poknemon toys very much, she gave them to the boy.
D. The author was deeply moved by the behavior of the little girl.
B
The day after Thanksgiving is
considered the first day of the holiday shopping season in the
In the past, before calculators and computers, workers recorded the profits and losses of American businesses in special books. They used red ink to record losses. They used black ink to record profits. They used the term “in the red” to mean losing money. “In the black” meant making a profit. So “Black Friday” was the day when the store owners moved from being “in the red” to “in the black.”
Many people consider “Black Friday” to be the busiest shopping day of the year. But that is probably false. Researchers say it may be the day when the largest number of people go to stores. But it is not necessarily the day when shoppers spend the largest amount of money. Some experts say Americans just want to get out of the house the day after Thanksgiving. And many stores reduce some of their prices on “Black Friday.”
However, experts say that many people wait until much closer to Christmas, December 25, hoping to find even lower prices. They say the busiest day of the year in terms of the amount of shoppers and sales is usually the Saturday before Christmas.
A marketing services company carried out a public opinion study about shopping last month. It asked almost one thousand Americans about their gift buying plans. One-third said they plan to go to stores to shop on the day after Thanksgiving.
The study found that these shoppers are mainly young people, probably because older people do not want to deal with huge crowds. In fact, business leaders say many older Americans are doing their shopping at home -- on the computer. They say the day most people shop online is the Monday after “Black Friday.” They even have a name for it -- “Cyber Monday.”
60. Which is the busiest shopping day of the year according to the text?
A. Black Friday
B. the day before Christmas
C. the Saturday before Christmas
D. Cyber Monday
61. Which of the following is true according to the passage?
A. Businessmen prefer the term “in the red” to “in the black”.
B. “Black Friday” means store owners begin to earn money.
C. The largest amount of sales is made on “Black Friday”.
D. The largest number of people go to stores on “Black Friday”.
62. Why don’t people spend money on “Black Friday”?
A. They are not satisfied with the quality of the goods sold.
B. Some shops secretly increase their prices on that day.
C. Too many people in the store discourage their shopping desire.
D. They are waiting for a more competitive price.
63. From the passage we can conclude that ________.
A. Stores failed to earn much money from older people on “Black Friday”.
B. “Cyber Monday” has a larger amount of sales than “Black Friday”.
C. All young people prefer going to stores on “Black Friday”.
D. Older people like shopping on-line because of cheaper prices.
C
The following are the results of the tests done by “Family and Home Magazine” on some Pocket Tape-Recorders on the market now.
Pearlcorder S702 $64
This simple model at the bottom of the
Tape length: 30minutes per side. Weight:
Sony M9 $49.95
Small and very good looking, Sony’s latest offering scored most for its appearance. Sounds clear, but there is slight machine noise. The big control buttons are a great improvement on some of the complicated little controls on other tape-recorders. It doesn’t switch off automatically, but a red light shows if the machine is still running.
Tape length: 60minutes per side. Weight:
Sony M400 $115
Lots of little control buttons that make a noise are difficult to use. Recording is good but machine noise loses points. Tape counter and automatic switch-off when tape has finished recording or rewinding are useful.
Tape length: 60 minutes per side. Weight:
Imperial OEM MC7 $ 29.95
Cheap and simple compared with the rest, but recording is good as long as there is no background noise. Use only its own-make of cassette. No light to show it is on; no fast-forward button and the record button makes a loud noise.
Tape length: 30 minutes per side. Weight:
Philips 585 $80
Handsome and simple to use, but
recording is very poor at more than the recommended distance of
Tape length: 15 minutes per side. Weight:
64. The machine that produces the best recording with the least unwanted noise is __.
A. Pearlcorder S 702 B. Sony M9
C. Sony M400 D. Imperial OEM MC7
65. If you want a machine which turns off automatically and weighs very little you should choose _____.
A. Pearlcorder S 702 B. Sony M9
C. Sony M400 D. Philips 585
66. Which of the following allows you to record longest but costs you least?
A. Philips 585 B. Imperial OEM MC7
C. Sony M400 D. Sony M9
67. What disadvantage does only the Imperial OEM MC7 have?
A. No light shows when it is on.
B. It requires a special cassette.
C. It picks up background noise.
D. The record button makes a noise.
D
The US Department of Labor statistics show that there is an oversupply of college trained workers and that this oversupply is increasing. Already there have been more than enough, teachers, engineers, physicists, aerospace experts, and other specialists. Yet colleges and graduate schools continue every year to turn out highly trained people to compete for jobs that aren’t there. The result is that graduates cannot enter the professions for which they were trained and must take temporary jobs which do not require a college degree.
On the other hand, there is a great need for skilled workers of all sports: carpenters, electricians, mechanics, plumbers, TV repairmen. These people have more work than they can deal with, and their annual incomes are often higher than those of college graduates. The old gap that white-collar workers make a better living than blue collar workers no longer holds true. The law of supply and demand now favors the skilled workmen.
The reason for this situation is the traditional myth that College degree is a passport to a prosperous future. A large part of American society matches success in life equally with a college degree. Parents begin indoctrinating(灌输) their children with this myth before they are out of grade school. High school teachers play their part by acting as if high school education were a preparation for college rather than for life. Under this pressure the kids fall in line. Whether they want to go to college or not doesn’t matter. Everybody should go to college, so of course they must go. And every year college enrollments(入学) go up and up, and more and more graduates are overeducated for the kinds of jobs available to them.
One result of this emphasis on a college education is that many people go to college who do not belong there. Of the sixty percent of high school graduates who enter college, half of them do not graduate with their class. Many of them drop out within the first year. Some struggle on for two or three years and then give up.
68. It’s implied but not stated in the passage that _______.
A. many other countries are facing the some problem
B. white-collar workers in the
C. fewer students will prefer to go to college in the future
D. the law of supply and demand has a strong effect on American higher education
69. Which of the following is NOT a reason why college enrollments go up every year?
A. Many believe the only way to success is a college education.
B. Many parents want their children ? to go to college.
C. High school teachers urge their students to go to college.
D. Every young man and woman wants to go to college.
70. By saying that “many people go to college who do not belong there”, the author means that ______.
A. many people unfit for college education go to college
B. many people without enough money go to college
C. many people going to college drop out within the first year
D. many people going to college have their hopes destroyed
71. We can infer from the passage that the author believe that ______.
A. every young man and woman should go to college
B. college education is a bad thing
C. people with a college education should receive higher pay
D. fewer people should go to college while more should be trained for skilled jobs
E
Anxiety is the appropriate emotion when the immediate personal terror ? of a volcano, an arrow, a stab(刺伤) in the back and other disasters ? is directed against one’s self-disappears.
The kind of world that produces anxiety is actually a world of relative safety, a world in which no one feels that he himself is facing sudden death. The anxiety exists as an uneasy state of mind, in which one has a feeling that something unspecified(不具体的) an indeterminable may go wrong. If the world seems to be going well, this produces anxiety―for good times may end. If the world is going badly―it may get worse. Anxiety tends to be without focus; the anxious person doesn’t know whether to blame himself or other people. He isn’t sure whether it is the change in climate or the atom bomb that is to blame for this unclear sense of unease.
It is clear that we have developed a society which depends on having the right amount of anxiety to make it work. While we agree that too much anxiety is harmful to mental health, we have come to rely on anxiety to push us into seeing a doctor about a symptom (症状) which may indicate cancer, into checking up on that old life-insurance policy which may have out-of-date provisions in it, into having a conference with Billy’s teacher even though his report card looks all right.
People who are anxious enough keep their care insurance up, have the brakes checked, and don’t take a second drink when they have to drive. People who are too anxious either refuse to go into cars at all or drive so tensely that they help cause accidents. People who aren’t anxious enough take chance after chance, which increases the terrible accidents of the roads.
72. In the world that produces anxiety, _______.
A. people have sudden uneasiness
B. everything goes well
C. people are clear about their life
D. danger is almost everywhere
73. The author holds that ______.
A. anxiety is a good thing
B. anxiety is a symptom of mental illness
C. some anxiety can lead to changes for the better
D. no anxiety is bad for society
74. Accidents of the road tend to be caused by _______.
A. all those who are too anxious
B. all those who have anxiety
C. those who have no anxiety
D. those who are not anxious enough
75. The best title for the passage would be _______.
A. Anxiety
B. The Right Amount of Anxiety
C. Anxiety vs Safety
D. Different Attitudes to Anxiety
V. 短文改错
Deal Paul,
How is everything? I’m writing to tell you about
the race be held next Tuesday. You are one 76. _____
of the ten runner in your class in the race, and you 77. _____
need to be at school gate by 1:30 pm that day. The 78. _____
race began at 1:40. All racers will start from the gate. Then 79. _____
turn right and run
along
traffic lights there you’ll turn right again and keep running 81. _____
along
There turn right, go on to the bank of the river, crossing the bridge 83. _____
and take a left turn. Finally, they are to reach the finish line. 84. _____
By the way, if you want much information, please let me know. 85. _____
VI. 书面表达
高三学生面临着沉重的学习压力，很多学生利用课间十分钟的休息时间学习,实际上没有什么效果。假如你是新华中学高三年级的学生李越，就此现象给中学生英语报写封信，发表自己的看法。信的内容须包括以下要点：
1．十分钟的课间休息很有必要（说明理由）；
2．你是怎样利用这十分钟的。
注意：1、词数100-200； 2、信的开头已经给出（不计入总数）。
Dear editor,
I’m a Senior 3 student from
_______________________________________________________________________________________________________________________________________________________________________________________________________________
Answers:
1-5 BDCAA 6-10 BCCAA 11-15 ABBAC 16-20 CDBAA
21-25 BBACD 26-30 CDADA 31-35 BDCDB
36-40 ADADC 41-45 BACBA 46-50 CDBAD 51-55 BCADC
56-59 BDBC 60-63 CBDA 64-67 ACDB 68-71 BDAD 72-75 BCDA
76. be 前加 to
77. runner--- runners
78. at 后加 the
79. began --- begins
80. 对
81．there --- where
82. 去掉 will
83. crossing --- cross
84. they --- you
85. much --- more
Dear editor,
I’m a Senior 3
student from
In my opinion, taking the ten-minute break between classes is definitely necessary, which makes us relaxed both physically and mentally. The ten-minute break is menat for us to relax and prepare for the next class. Only by doing so can we have more energy to study effectively in class.
My ten-minute break is always pleasing as well as relaxing. Sometimes I do some simple exercises. Sometimes I have a free chat with my classmates or just take walk outside. Therefore, I always feel energetic and listen attentively in class.
2009届英才中学高三物理五月份信息题
14．如图所示，截面为三角形的斜面体（固定）由两种材料拼接而成，BC界面平行底面DE，两侧面与水平面夹角分别为α＝30、β＝60。已知物块从A静止沿ABD下滑，加速至B匀速至D；若该物块静止从A沿另一侧面ACE下滑，则有
A．通过C点的速率等于通过B点的速率 B．AB段的运动时间大于AC段的运动时间
C．AE段受到的冲量大于AD段受到的冲量 D．AE段受到的冲量小于AD段受到的冲量
15．一个大小可忽略不计的物体静置于光滑水平面上，外面扣一质量为M的盒子，如图甲所示.现给盒子一初速度v0，此后，盒子运动的v－t图象呈周期性变化，如图乙所示.盒子与物块的碰撞无机械能损失.有关盒内物体的质量m和盒的宽度L的说法正确的是
A.M≠m B.M＝m C.L＝v0t D.L＝2v0t
16．如图是德国物理学家史特恩设计的最早测定气体分子速率的示意图：M．N是两个共轴圆筒，外筒半径为R，内筒半径可忽略，筒的两端封闭，两筒之间抽成真空，两筒以相同角速度W绕O匀速转动，M筒开有与转轴平行的狭缝S，且不断沿半径方向向外射出速率为v1和v2的分子，分子到达N筒后被吸附，如果R．v1．v2保持不变，W取一合适值，则
A．当
时，分子落在同一狭条上
B．当
≠
时，分子落在不同狭条上
C．只要时间足够长，N筒上到处都落有分子
D．分子不可能落在N筒上某两处且与S平行的狭条上
17．某星际探测是现代航天科技发展的重要课题。如图，某探测器从空间的O点沿直线ON从静止开始以加速度a作匀加速直线运动，二个月后与地球相遇于P点，再经二个月与地球相遇于Q点，已知万有引力常量G，地球公转周期为T，且探测器的运动不受地球的影响，则太阳的质量为
A.
B. 
C. 
D. 
18．如图所示，两块相同的玻璃等腰三棱镜ABC置于空气中，两者的AC面相互平行放置，由红光和蓝光组成的细光束平行于BC面从P点射入，通过两棱镜后变为从a、b两点射出的单色光，对于这两束单色光
A．从a、b两点射出的单色光不平行
B．从a、b两点射出的单色光仍平行，且平行于BC面 
C．红光在玻璃中的传播速度比蓝光大
D．从a点射出的单色光为红光，从b点射出的单色光为蓝光
19.匀强电场中有a、b、c三点.在以它们为顶点的三角形中，∠a＝30°，∠c＝90°，电场方向与三角形所在平面平行.已知a、b和c点的电势分别为(2－) V、(2＋) V和2 V.该三角形的外接圆上最低和最高的电势分别为
A.(2－) V、(2＋) V B.0、4 V
C.(2－) V、(2＋) V D.0、V
20.如图所示，竖直平面上的两个半径相同的光滑的半圆形轨道，分别处在沿水平方向的匀强电场和匀强磁场中，两个相同的带正电小球同时从两轨道左端最高点由静止释放.M、N为轨道的最低点，下列判断正确的是
A.两小球到达轨道最低点的速度一定是v M＞v N
B.两小球经过轨道最低点时对轨道的压力一定是N M＞N N
C.小球第一次到达M点的时间大于小球第一次到达N点的时间
D.在磁场中小球能到达轨道的另一端最高处，在电场中小球不能到达轨道另一端最高处
21．如图所示，平行金属导轨与水平面成θ角，导轨与固定电阻R1和R2相连，匀强磁场垂直穿过导轨平面。有一导体棒ab，质量为m，导体棒的电阻与固定电阻R1和R2的阻值均相等，与导轨之间的动摩擦因数为μ，导体棒ab沿导轨向上滑动，当上滑的速度为v时，导体棒受到的安培力的大小为F，此时
A．电阻R1消耗的热功率为
B．电阻R2消耗的热功率为
C．整个装置因摩擦而消耗的热功率为μmgv D．整个装置消耗机械功率为（F + μmgcosθ）v
22. (18分)I.(6分)利用单摆验证小球平抛运动规律，设计方案如图（a）所示，在悬点O正下方有水平放置的炽热的电热丝P，当悬线摆至电热丝处时能轻易被烧断；MN为水平木板，已知悬线长为L，悬点到木板的距离OO’＝h（h＞L）。
（1）电热丝P必须放在悬点正下方的理由是： 。
（2）将小球向左拉起后自由释放，最后小球落到木板上的C点，O’C＝s，则小球做平抛运动的初速度为v0 = _ 。
（3）在其他条件不变的情况下，若改变释放小球时悬线与竖直方向的夹角q，小球落点与O’点的水平距离s将随之改变，经多次实验，以s2为纵坐标、cosq为横坐标，得到如图（b）所示图像。则当q＝30°时，s为
m；若悬线长L＝
I
电压表VA．量程5V．内电阻约3000Ω 电压表VB．量程3V．内电阻约2500Ω
电流表A．量程
电阻箱R2．阻值范围0―99.9Ω
滑动变阻器R3．阻值0―50Ω．额定电流
滑动变阻器R4．阻值0―10Ω．额定电流
单刀开关2个，导线若干
① 在设计电路时，能否选用电流表A，请简要说明理由________。
②选用的器材有________。
③为了测量两个电压表内电阻，请设计一个测量电路，画出电路图。
④说明实验原理和需要测量的物理量，并列出计算两个电压表内电阻的计算式。
23．（16分）一艘帆船在湖面上顺风行驶，在风力的推动下做速度
的匀速直线运动。已知：该帆船在匀速行驶的过程中，风突然停止，经过8秒钟帆船能够恰好静止在水面上；该帆船的帆面正对风的有效面积为S=
，帆船的质量M约为
，假设帆船在行驶的过程中受到水的阻力始终恒定不变，风撞击帆面之后相对于船的速度不计，那么由此估算：(1)帆船在匀速行驶时，受到的风的推力和水的阻力分别为多大?(2)空气的密度约为多少?
24．（18分）如图所示，直流电动机的轴与圆盘中心相连，电键S断开时，电压表的示数为12.6V。电键S闭合时，电流表的示数为
r／s，两弹簧秤示数各为7.9N和6.1N。问:
(1)电动机的输入功率、输出功率、效率各为多少?
(2)拉紧皮带可使电动机停转，此时电压表、电流表的示数又各为多少?电动机的输入功率又为多大?
25．（20分）真空中有一半径为r的圆柱形匀强磁场区域，方向垂直纸面向里，Ox为过边界上O点的切线，如图所示，从O点在纸面内向各个方向发射速率均为v0的电子，设电子间相互作用忽略，且电子在磁场中偏转半径也为r，已知电子的电量为e，质量为m.
(1)速度方向分别与Ox方向夹角成600和900的电子，在磁场中的运动时间分别为多少？
(2)所有从磁场边界出射的电子，速度方向有何特征？
(3)令在某一平面内有M、N两点，从M点向平面内各个方向发射速率均为v0的电子,请设计一种匀强磁场分布，其磁感应强度大小为B，使得由M点发出的电子都能够汇聚到N点．
英才中学五月份信息题★理综物理
题号
14
15
16
17
18
19
20
21
答案
BC
BD
B
B
BCD
B
AD
BD
22．I（1）保证小球沿水平方向抛出（2分） （2）（2分） （3）0.52（2分）
II
．（1）6 0.1825
（2）①电流表A不能选用，电流表量程太大，测量不准确。
②电阻箱R1，变阻器R3，电池组和开关2个，导线若干。
③电路如答图1―1所示
④开关S2打开时，电压表VA和VB串联，其读数之比等于内 电阻之比
，即开关S2闭合时，电压表VA和电阻箱电阻R1并联，再与VB串联，其读数之比为： 
由以上两式可解得
23.解答：（1）风突然停止，船体只受到水的阻力f做减速运动 船体加速度大小：
∴船体只受到水的阻力：
帆船在匀速运动时受到风的推力和水的阻力而平衡，所以： 帆船受到风的推力大小：
（2）（特别说明：没有相应的估算过程，直接写出空气密度的不能得分）
在单位时间内，对吹入帆面的空气（柱）应用动量定理有：
24. （20分）解:(1)电动机的输入功率为P入＝UI=12×2W=24W。 （2分）
电动机的输出功率与皮带对圆盘做功功率相等，且圆盘转动的线速度v为2πnr则：
P出＝(F1-F2)v＝(F1-F2) 2πnr=（7.9－6.1）×2π×（50／π）×0.05＝18W。
效率为
（4分）
(2)拉紧皮带使电动机停转，此时电路为纯电阻电路，由题分析可知电源电动势为12.6V，电源内阻为 
， （2分）
电动机的直流电阻为
此时电压表示数为
（2分）
电流表示数为
电动机的输入功率为
（2分）
25解：(1）如图所示，入射时电子速度与x轴夹角为
，无论入射的速度方向与x轴的夹角为何值，入射点均为O，射出点均为A，磁场圆心O1和轨道圆心O2一定组成边长为r的菱形．因O1O⊥Ox , OO2垂直于入射速度，故∠OO.即电子在磁场中所转过的角度一定等于入射时电子速度与Ox轴的夹角．
当= 600时，
；当= 900时，
。
(2）因∠OO，故O
(3)上述的粒子路径是可逆的，(2)中从圆形磁场射出的这些速度相同的电子再进入一相同的匀强磁场后，一定会聚焦于同一点，磁场的分布如图所示，对于从M点向MN连线上方运动的电子，两磁场分别与MN相切，M、N为切点，且平行于两磁场边界圆心的连线O1O2．设MN间的距离为l，所加的磁场的边界所对应圆的半径为r，故应有2r≤l，即
≤l，所以所加磁场磁感应强度应满足B≥
.
同理，对于从M点向MN连线下方运动的电子，只要使半径相同的两圆形磁场与上方的两圆形磁场位置MN对称且磁场方向与之相反即可．
说明：只要在矩形区域M1N1N
6、B 提示：1°当
，
时，则分子落在与S正对的同一狭条上，A错；2°当
，
时，但
时，则分子落在不正对S的同一狭条上，3°
时，则落在两条不同狭条上，所以B正确，CD错误
上海市十校2009届高三第二学期联合考试
物理试题
说明：
1．答卷前，考生务必将姓名、准考证号等填写清楚.
2．本试卷共10页，满分150分. 考试时间120分钟. 考生应用蓝色或黑色的钢笔或圆珠笔将答案直接写在试卷上.
3．第20、21、22、23、24题要求写出必要的文字说明、方程式和重要的演算步骤. 只写出最后答案，而未写出主要演算过程的，不能得分. 有关物理量的数值计算问题，答案中必须明确写出数值和单位.
