哈爾濱市第六中學2009屆高三第一次模擬考試
英語試題
I.
聽力
第一節(jié)（共5小題；每小題1.5分，滿分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.
第二節(jié)（共15小題；每小題1.5分，滿分22.5分）
聽第6段材料，回答第6至8題。
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
聽第7段材料，回答第9至11題。
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.
聽第8段材料，回答第12至14小題。
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
聽第9段材料，回答第15至17題。
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
聽第10段材料，回答第18至20題。
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. 單項選擇
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 (紙巾). 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. 閱讀理解
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 (收銀員) 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(灌輸) 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(入學) 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(刺傷) 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(不具體的) 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 (癥狀) 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. 短文改錯
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. 書面表達
高三學生面臨著沉重的學習壓力，很多學生利用課間十分鐘的休息時間學習,實際上沒有什么效果。假如你是新華中學高三年級的學生李越，就此現(xiàn)象給中學生英語報寫封信，發(fā)表自己的看法。信的內(nèi)容須包括以下要點：
1．十分鐘的課間休息很有必要（說明理由）；
2．你是怎樣利用這十分鐘的。
注意：1、詞數(shù)100-200； 2、信的開頭已經(jīng)給出（不計入總數(shù)）。
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. 對
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屆英才中學高三物理五月份信息題
14．如圖所示，截面為三角形的斜面體（固定）由兩種材料拼接而成，BC界面平行底面DE，兩側(cè)面與水平面夾角分別為α＝30、β＝60。已知物塊從A靜止沿ABD下滑，加速至B勻速至D；若該物塊靜止從A沿另一側(cè)面ACE下滑，則有
A．通過C點的速率等于通過B點的速率 B．AB段的運動時間大于AC段的運動時間
C．AE段受到的沖量大于AD段受到的沖量 D．AE段受到的沖量小于AD段受到的沖量
15．一個大小可忽略不計的物體靜置于光滑水平面上，外面扣一質(zhì)量為M的盒子，如圖甲所示.現(xiàn)給盒子一初速度v0，此后，盒子運動的v－t圖象呈周期性變化，如圖乙所示.盒子與物塊的碰撞無機械能損失.有關(guān)盒內(nèi)物體的質(zhì)量m和盒的寬度L的說法正確的是
A.M≠m B.M＝m C.L＝v0t D.L＝2v0t
16．如圖是德國物理學家史特恩設(shè)計的最早測定氣體分子速率的示意圖：M．N是兩個共軸圓筒，外筒半徑為R，內(nèi)筒半徑可忽略，筒的兩端封閉，兩筒之間抽成真空，兩筒以相同角速度W繞O勻速轉(zhuǎn)動，M筒開有與轉(zhuǎn)軸平行的狹縫S，且不斷沿半徑方向向外射出速率為v1和v2的分子，分子到達N筒后被吸附，如果R．v1．v2保持不變，W取一合適值，則
A．當
時，分子落在同一狹條上
B．當
≠
時，分子落在不同狹條上
C．只要時間足夠長，N筒上到處都落有分子
D．分子不可能落在N筒上某兩處且與S平行的狹條上
17．某星際探測是現(xiàn)代航天科技發(fā)展的重要課題。如圖，某探測器從空間的O點沿直線ON從靜止開始以加速度a作勻加速直線運動，二個月后與地球相遇于P點，再經(jīng)二個月與地球相遇于Q點，已知萬有引力常量G，地球公轉(zhuǎn)周期為T，且探測器的運動不受地球的影響，則太陽的質(zhì)量為
A.
B. 
C. 
D. 
18．如圖所示，兩塊相同的玻璃等腰三棱鏡ABC置于空氣中，兩者的AC面相互平行放置，由紅光和藍光組成的細光束平行于BC面從P點射入，通過兩棱鏡后變?yōu)閺?i>a、b兩點射出的單色光，對于這兩束單色光
A．從a、b兩點射出的單色光不平行
B．從a、b兩點射出的單色光仍平行，且平行于BC面 
C．紅光在玻璃中的傳播速度比藍光大
D．從a點射出的單色光為紅光，從b點射出的單色光為藍光
19.勻強電場中有a、b、c三點.在以它們?yōu)轫旤c的三角形中，∠a＝30°，∠c＝90°，電場方向與三角形所在平面平行.已知a、b和c點的電勢分別為(2－) V、(2＋) V和2 V.該三角形的外接圓上最低和最高的電勢分別為
A.(2－) V、(2＋) V B.0、4 V
C.(2－) V、(2＋) V D.0、V
20.如圖所示，豎直平面上的兩個半徑相同的光滑的半圓形軌道，分別處在沿水平方向的勻強電場和勻強磁場中，兩個相同的帶正電小球同時從兩軌道左端最高點由靜止釋放.M、N為軌道的最低點，下列判斷正確的是
A.兩小球到達軌道最低點的速度一定是v M＞v N
B.兩小球經(jīng)過軌道最低點時對軌道的壓力一定是N M＞N N
C.小球第一次到達M點的時間大于小球第一次到達N點的時間
D.在磁場中小球能到達軌道的另一端最高處，在電場中小球不能到達軌道另一端最高處
21．如圖所示，平行金屬導軌與水平面成θ角，導軌與固定電阻R1和R2相連，勻強磁場垂直穿過導軌平面。有一導體棒ab，質(zhì)量為m，導體棒的電阻與固定電阻R1和R2的阻值均相等，與導軌之間的動摩擦因數(shù)為μ，導體棒ab沿導軌向上滑動，當上滑的速度為v時，導體棒受到的安培力的大小為F，此時
A．電阻R1消耗的熱功率為
B．電阻R2消耗的熱功率為
C．整個裝置因摩擦而消耗的熱功率為μmgv D．整個裝置消耗機械功率為（F + μmgcosθ）v
22. (18分)I.(6分)利用單擺驗證小球平拋運動規(guī)律，設(shè)計方案如圖（a）所示，在懸點O正下方有水平放置的熾熱的電熱絲P，當懸線擺至電熱絲處時能輕易被燒斷；MN為水平木板，已知懸線長為L，懸點到木板的距離OO’＝h（h＞L）。
（1）電熱絲P必須放在懸點正下方的理由是： 。
（2）將小球向左拉起后自由釋放，最后小球落到木板上的C點，O’C＝s，則小球做平拋運動的初速度為v0 = _ 。
（3）在其他條件不變的情況下，若改變釋放小球時懸線與豎直方向的夾角q，小球落點與O’點的水平距離s將隨之改變，經(jīng)多次實驗，以s2為縱坐標、cosq為橫坐標，得到如圖（b）所示圖像。則當q＝30°時，s為
m；若懸線長L＝
I
電壓表VA．量程5V．內(nèi)電阻約3000Ω 電壓表VB．量程3V．內(nèi)電阻約2500Ω
電流表A．量程
電阻箱R2．阻值范圍0―99.9Ω
滑動變阻器R3．阻值0―50Ω．額定電流
滑動變阻器R4．阻值0―10Ω．額定電流
單刀開關(guān)2個，導線若干
① 在設(shè)計電路時，能否選用電流表A，請簡要說明理由________。
②選用的器材有________。
③為了測量兩個電壓表內(nèi)電阻，請設(shè)計一個測量電路，畫出電路圖。
④說明實驗原理和需要測量的物理量，并列出計算兩個電壓表內(nèi)電阻的計算式。
23．（16分）一艘帆船在湖面上順風行駛，在風力的推動下做速度
的勻速直線運動。已知：該帆船在勻速行駛的過程中，風突然停止，經(jīng)過8秒鐘帆船能夠恰好靜止在水面上；該帆船的帆面正對風的有效面積為S=
，帆船的質(zhì)量M約為
，假設(shè)帆船在行駛的過程中受到水的阻力始終恒定不變，風撞擊帆面之后相對于船的速度不計，那么由此估算：(1)帆船在勻速行駛時，受到的風的推力和水的阻力分別為多大?(2)空氣的密度約為多少?
24．（18分）如圖所示，直流電動機的軸與圓盤中心相連，電鍵S斷開時，電壓表的示數(shù)為12.6V。電鍵S閉合時，電流表的示數(shù)為
r／s，兩彈簧秤示數(shù)各為7.9N和6.1N。問:
(1)電動機的輸入功率、輸出功率、效率各為多少?
(2)拉緊皮帶可使電動機停轉(zhuǎn)，此時電壓表、電流表的示數(shù)又各為多少?電動機的輸入功率又為多大?
25．（20分）真空中有一半徑為r的圓柱形勻強磁場區(qū)域，方向垂直紙面向里，Ox為過邊界上O點的切線，如圖所示，從O點在紙面內(nèi)向各個方向發(fā)射速率均為v0的電子，設(shè)電子間相互作用忽略，且電子在磁場中偏轉(zhuǎn)半徑也為r，已知電子的電量為e，質(zhì)量為m.
(1)速度方向分別與Ox方向夾角成600和900的電子，在磁場中的運動時間分別為多少？
(2)所有從磁場邊界出射的電子，速度方向有何特征？
(3)令在某一平面內(nèi)有M、N兩點，從M點向平面內(nèi)各個方向發(fā)射速率均為v0的電子,請設(shè)計一種勻強磁場分布，其磁感應(yīng)強度大小為B，使得由M點發(fā)出的電子都能夠匯聚到N點．
英才中學五月份信息題★理綜物理
題號
14
15
16
17
18
19
20
21
答案
BC
BD
B
B
BCD
B
AD
BD
22．I（1）保證小球沿水平方向拋出（2分） （2）（2分） （3）0.52（2分）
II
．（1）6 0.1825
（2）①電流表A不能選用，電流表量程太大，測量不準確。
②電阻箱R1，變阻器R3，電池組和開關(guān)2個，導線若干。
③電路如答圖1―1所示
④開關(guān)S2打開時，電壓表VA和VB串聯(lián)，其讀數(shù)之比等于內(nèi) 電阻之比
，即開關(guān)S2閉合時，電壓表VA和電阻箱電阻R1并聯(lián)，再與VB串聯(lián)，其讀數(shù)之比為： 
由以上兩式可解得
23.解答：（1）風突然停止，船體只受到水的阻力f做減速運動 船體加速度大小：
∴船體只受到水的阻力：
帆船在勻速運動時受到風的推力和水的阻力而平衡，所以： 帆船受到風的推力大小：
（2）（特別說明：沒有相應(yīng)的估算過程，直接寫出空氣密度的不能得分）
在單位時間內(nèi)，對吹入帆面的空氣（柱）應(yīng)用動量定理有：
24. （20分）解:(1)電動機的輸入功率為P入＝UI=12×2W=24W。 （2分）
電動機的輸出功率與皮帶對圓盤做功功率相等，且圓盤轉(zhuǎn)動的線速度v為2πnr則：
P出＝(F1-F2)v＝(F1-F2) 2πnr=（7.9－6.1）×2π×（50／π）×0.05＝18W。
效率為
（4分）
(2)拉緊皮帶使電動機停轉(zhuǎn)，此時電路為純電阻電路，由題分析可知電源電動勢為12.6V，電源內(nèi)阻為 
， （2分）
電動機的直流電阻為
此時電壓表示數(shù)為
（2分）
電流表示數(shù)為
電動機的輸入功率為
（2分）
25解：(1）如圖所示，入射時電子速度與x軸夾角為
，無論入射的速度方向與x軸的夾角為何值，入射點均為O，射出點均為A，磁場圓心O1和軌道圓心O2一定組成邊長為r的菱形．因O1O⊥Ox , OO2垂直于入射速度，故∠OO.即電子在磁場中所轉(zhuǎn)過的角度一定等于入射時電子速度與Ox軸的夾角．
當= 600時，
；當= 900時，
。
(2）因∠OO，故O
(3)上述的粒子路徑是可逆的，(2)中從圓形磁場射出的這些速度相同的電子再進入一相同的勻強磁場后，一定會聚焦于同一點，磁場的分布如圖所示，對于從M點向MN連線上方運動的電子，兩磁場分別與MN相切，M、N為切點，且平行于兩磁場邊界圓心的連線O1O2．設(shè)MN間的距離為l，所加的磁場的邊界所對應(yīng)圓的半徑為r，故應(yīng)有2r≤l，即
≤l，所以所加磁場磁感應(yīng)強度應(yīng)滿足B≥
.
同理，對于從M點向MN連線下方運動的電子，只要使半徑相同的兩圓形磁場與上方的兩圓形磁場位置MN對稱且磁場方向與之相反即可．
說明：只要在矩形區(qū)域M1N1N
6、B 提示：1°當
，
時，則分子落在與S正對的同一狹條上，A錯；2°當
，
時，但
時，則分子落在不正對S的同一狹條上，3°
時，則落在兩條不同狹條上，所以B正確，CD錯誤
上海市十校2009屆高三第二學期聯(lián)合考試
物理試題
說明：
1．答卷前，考生務(wù)必將姓名、準考證號等填寫清楚.
2．本試卷共10頁，滿分150分. 考試時間120分鐘. 考生應(yīng)用藍色或黑色的鋼筆或圓珠筆將答案直接寫在試卷上.
3．第20、21、22、23、24題要求寫出必要的文字說明、方程式和重要的演算步驟. 只寫出最后答案，而未寫出主要演算過程的，不能得分. 有關(guān)物理量的數(shù)值計算問題，答案中必須明確寫出數(shù)值和單位.
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