请阅读下面短文，掌握其大意，然后从36—55各题所给的A、B

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请阅读下面短文，掌握其大意，然后从36—55各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
Peer pressure can be a powerful force, and sometimes a positive one. For example, hanging out with active peers may lead kids to        more, making a child’s social network a vehicle for promoting healthy habits and         obesity unconsciously.
The scientists studied networks of a group of students aged 5 to 12 and        how the youngsters’ made and dropped friends, and         effect these changing relationships had on their physical activity level.
In fact, children        their exercise level little by little to better      those in their circle; children who     with more active students were more        to increase their physical activity levels,        those who befriended more sedentary(久坐不动的) children became        active. The children were mirroring, following or adjusting to be        to their friends before they knew it.
The encouraging        suggest a potentially effective way to change children’s behavior.        relying only on organized exercise programs to get moving, perhaps introducing sedentary kids to more active ones — might help more kids        the couch.
It’s believed that this is a possible novel approach to obesity        . The social environment does carry more power than we have given it        for, so we should make use of that intentionally to influence kids.
     that children are increasingly connected to one another,        through face-to-face interactions or virtual ones, their        networks can clearly have a deep effect        many aspects of their behavior-help kids in the long run by turning them into healthier adults.

A．sleep B．move C．exercise D．eat

A．developing B．increasing C．introducing D．reducing

A．tracked B．informed C．sorted D．concluded

A．whose B．what C．that D．which

A．adjusted B．insisted C．appealed D．devoted

A．equal B．compete C．match D．compare

A．left out B．hung out C．made out D．figured out

A．likely B．possible C．bound D．due

A．while B．though C．since D．because

A．more B．permanent C．less D．temporary

A．familiar B．similar C．popular D．regular

A．causes B．results C．reasons D．experiments

A．More than B．Less than C．Other than D．Rather than

A．get down B．get off C．get on D．get over

A．prevention B．introduction C．discussion D．information

A．honor B．approval C．agreement D．credit

A．Considered B．Given C．Realized D．Supposed

A．whatever B．if C．however D．whether

A．social B．natural C．mental D．physical

A．with B．for C．at D．on

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　　If you do not use your arms or your legs for some time, they become weak. When you 1using them again, they 2become strong again. Everybody knows this and nobody would think of 3 this fact. 4 there are many people who do not 5 to know that memory works in the 6 way.
　　7someone says that he has a good memory; he8 means that he 9 his memory by practising exercising it. When someone 10 says that his memory is poor, he actually means that he 11 give it enough chances to become 12 .Have you ever 13 that people who cannot read or write usually have 14 memories than those who can? This is 15 those who 16 read or write 17 remember things. They have to remember dates, places, names, songs and stories. So their memory is the whole time 18 .So 19 you want to have a good memory, you should learn from those people, 20 by remembering what you see, hear, feel and write. If so, you must have a good memory.
　　1. A. begin       B. go on     C. stop        D. continue
　　2. A. quickly     B. slowly     C. soon       D. at once
　　3. A. doing      B. agreeing    C. questioning D. answering
　　4. A. Yet        B. Still       C. So         D. Certainly
　　5. A. want       B. seem      C. get         D. hope
　　6. A. other       B. usual      C. same        D. opposite
　　7. A. As         B. What      C. While       D. When
　　8. A. real        B. actually    C. true        D. then
　　9. A. wants      B. builds up    C. makes      D. keeps
　　10.A.again      B. else         C. more       D. once
　　11.A.do not     B. is not        C. never       D. does not
　　12.A.poor       B. weak        C. strong      D. healthy
　　13.A.seen       B. heard of      C. noticed     D. thought of
　　14.A.worse      B. better       C. more        D. less
　　15.A.why        B. how       C. because      D. the reason
　　16.A.used to     B. cannot      C. try to        D. have to
　　17.A.will not     B. have to      C. refuse      D. cannot
　　18.A.ready       B. being used   C. busy       D. training
　　19.A.if          B. that        C. though      D. thus
20.A.please      B. try          C. train       D. enjoy

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A high school history teacher once told us, “If you make one close friend in school, you will be most fortunate. A true friend is someone who stays with you for life."_1_ teaches that he was right. Good friendship is just not easily _2_.
It is possible that we simply do not stay in one place long enough food _3_friendship to _4_. However, there can be_5_disagreement on the need for each of us to think carefully about the kind of friendship we want.
To most of us, friendships are considered very important, but we need to have clear in our _6_ the kinds of friendship we want. Are they to be close or _7_ at arm's length? Do we want to _8_ourselves or do we want to walk on the surface? For some people, many friendships on the surface are _9_enough—and that' s all right. But at some point we need to 10 that our expectations are the same as our friends' expectations. The sharing of_11_experience _12_ our tears as well as our dark dreams is the surest way to deepen friendships. But it _13_be undertaken(进行) slowly and carried on only if there are _14_of interest and action in return.
What are some of the _15_of friendship? The greatest is the attraction to expect too much too soon. Deep relationships _16_time. Another“major difficulty" is the selfishness to think one “possesses" the other, including his time and attention. Similarly, friendships _17_ actions in return. In 18words, you must give as much as you take. Finally there is a question of taking care of. Unless you spend _19_time together, talking on the phone, writing letters, doing things together, friendships will die _20_.
1. A. Knowledge        B. Teachers            C. Experience       D. Parents
2. A. understood         B. formed             C. realized         D. produced
3. A. true               B. common           C. deeply           D. actual
4. A. design             B. intend             C. develop          D. appear
5. A. no                B. some              C. any             D. none
6. A. hearts             B. thoughts            C. actions          D. minds
7. A. remained          B. left                C. kept            D. stayed
8. A. own               B. owe               C. share            D. spare
9. A. that               B. very               C. quite            D. not
10. A. make sure         B. remember         C. expect           D. check out
11. A. social            B. ordinary            C. good           D. personal
12. A. includes          B. to include           C. including        D. included
13. A. can              B. need               C. will            D. must
14. A. marks            B. sights              C. scenes          D. signs
15. A. difficulties        B. differences          C. advantages      D. things
16. A. cost             B. spend               C. ask            D. take
17. A. require           B. request             C. depend         D. suggest
18. A. some            B. many               C. other          D. different
19. A. reasonable        B. comfortable          C. less            D. a lot
20. A. for             B. away                C. out            D. from

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After lunch, without permission from parents, the two boys set off to explore the part of the beach which lay beyond the headland(陆岬，伸出海面的尖形高地).They had persuaded their young sister to _1_, saying that the long walk would be too _2_for her. Once they had got in the head land, the beach reached away endlessly before them. It was like _3_a new world. There were damp, dark caves to _4_,there were many_5_ among the rocks, full of sea creatures(生物);and, here and there along the beach were those _6_ objects, washed up and _7_ by the tide.
The afternoon passed _8_The sun was already _9_when the boys reluctantly(恋恋不舍地) _10_ to make their _11_ homewards. But long before they reached the headland, they could see that the tide had come in so sudden that they were now _12_from either end of the beach. Their only chance of _13_ was to find a way up the cliff(悬崖) nearby.
They soon find a narrow path _14_ the cliff top. But half way up their path was_15_by a large rock which they could not climb_16_The two boys had to_17_ at the top of their voices, _18_ that someone might_19_over the top of the rock, and finally came their father with two policemen. _20_of them climbed down a rope which was lowered over the rock. The boys were then pulled to safety, and thus saved from spending a miserable night on the cliff.
1. A. keep quiet    B. stay behind       C. take a rest        D. join them
2. A. tiring        B. exciting          C. uninteresting     D. impossible
3. A. discovering   B. facing           C. enjoying         D. imagining
4. A. look up     B. explore           C. hide in          D. search
5. A. lakes        B. rivers            C. waterfalls        D. pools
6. A. dirty        B .light             C. strange           D. clean
7. A. moved       B .covered          C. beaten           D. left
8. A. quickly      B. unexpectedly      C. finally            D. suddenly
9. A. leaving      B. dropping          C. going            D. setting
10. A. forgot      B. decided           C. succeeded        D. turned
11.A. road        B. way             C. track            D. path
12. A. cut off      B. left behind         C. held back        D. put away
13. A. running off B. keeping clear       C. getting away      D. turning back
14. A. reaching    B. passing            C. going up         D. leading to
15. A. blocked     B. covered           C. stopped          D. filled
16. A. on         B. over              C. round            D. through
17. A. shout       B. shoot             C. repeat            D .renew
18. A. wanting     B. guessing          C. believing          D. hoping
19. A .turn        B. appear            C. hide              D. climb
20. A. Any        B. None             C. One              D. First

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The word “sharp” can be _1_ to describe many different things in your home, classroom, and places of work. In this chapter, the writer _2_sharp pencils, meaning pencils with a very fine _3_.The writer does not like dull pencils.
We can also use “sharp” to describe the blades of knives. Knives also have points. We can use “sharp” to describe a _4_ kind of point,_5_as the sharp points of kitchen and steak knives. Scissors have blades, too, and we can describe these blades as sharp or dull. Furthermore, the points of scissors are _6_ sharp or rounded _7_ on the kind of scissors. Some tools, such as saws, scrapers, and garden tools, also have blades. We can use the words “sharp” and “dull” to describe the blades of these tools, _8_.Sharp knives, scissors, and tools are_9_to use. They cut things easily and quickly, without effort.
“Sharp” can be used to describe the edges of furniture and _10_some containers. For example, the edge of a table or desk can be _11_.In addition; we can describe the edge of _12_ open can as sharp. The top of a can is sometimes sharp_13_ to cut your hand. A piece of _14_ from a broken jar or bottle is_15_very sharp.
_16_we sometimes use “sharp” to describe people. A person who appears sharp is very well _17_.A person who is sharp, on the other hand, is intelligent, smart, and_18_ learn and understand.
To summaries, “sharp” can be used to describe many kinds of _19_ that have blades, points, and edges. When we used it to describe people, it can mean nice looking, well dressed, or intelligent. It is an expensive word _20_ it can be used in many different ways.
1. A. written         B. used         C. seen           D. taken
2. A. talks about                      B. takes care of
C. doesn't like to mention            D. makes up his mind to
3. A. sharp          B. color         C. point          D. edge
4. A. some         B. any          C. only           D. certain
5. A. so           B. as soon         C. such           D. or
6. A. either        B. neither          C. too            D. very
7. A. working      B. which are       C. is             D. spending
8. A. too          B. even           C. either          D. ever
9. A. difficult      B. easy            C. interesting      D. clean
10. A. for         B. with            C. of             D. at
11. A. seen        B. sharp           C. smooth         D. hard
12. A. an          B. a              C. the             D.\
13. A. so as        B. in order        C. so that          D. enough
14. A. news        B. glass          C. information      D. advice
15. A. again        B. quite          C. rather           D. ordinarily
16. A. However     B. Finally        C. Therefore        D. In this way
17. A. prepared     B. dressed        C. mannered        D. served
18. A. easy to      B .is to           C. to              D. quick to
19 .A. funny things B. knives        C. objects          D. containers
20. A. because      B. even if        C. though          D. not only

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Marriage is still a popular institution in the United States, but divorce(离婚) is becoming_1_as“popular”.Most American people get married, _2_,at the present time, and fifty percent of American marriages end _3_ divorce. However, four out of five divorced people do not _4_ single. They get married a second time to _5_ partners. Sociologists(社会学家)tell us that in the next century, _6_American people will marry three _7_ four times in one lifetime. Alvin Toffler, an American sociologist, _8_this new social form serial(连续的)marriages. In his book Future Shock, Toffler gives many _9_ for this change in American marriage. In modern society, _10_ lives don't stay the same for very long.Americans_11_ change their jobs, their homes, and their circles of _12_So,the person who was a _13_ husband or wife ten years ago is sometimes not as good ten years _14_After some years of marriage, a husband and wife can _15 _that their lives have become very different, and they don't 16the same interests anymore. For this reason, Toffler says, people in the twenty first century will not _17_ to marry only one person for an _18_ lifetime. They will plan to stay married to one person for perhaps five or ten years, and then marry _19_.Most Americans will expect to have a “marriage carrier”that _20_ three or four marriages.
1. A. already           B. almost          C. ever        D. even
2. A. anyway           B. then            C. but         D. therefore
3. A. with            B. from            C. in          D. for
4. A. live              B. take            C. make       D. stay
5. A .new             B. old              C. young       D. pretty
6. A. most             B. main            C. few         D. mostly
7. A. and             B. by              C. or          D. to
8. A. asks             B. calls             C. tells        D. lets
9. A. causes           B. chances           C. problems    D. reasons
10. A. human's         B. people's          C. person's      D. man's
11. A. frequently       B. quickly           C. rapidly      D. fast
12. A. parents         B. classmates         C. neighbors    D. friends
13. A. polite           B. strict              C. good      D. unfriendly
14. A. late             B. latter           C. lately       D. later
15. A. imagine         B. feel              C. believe     D. suppose
16. A. enjoy           B. hold             C. divide      D. share
17. A. desire          B. plan              C. wish       D. design
18. A. entire         B. extreme           C. total       D. whole
19. A. the other       B. others             C. other       D. another
20. A. appears        B. happens           C. includes     D. carries

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