阅读下面短文，掌握其大意，然后从1￣25各题所给的四个选项中，选出一个最佳答案。

    Have you 1 asked yourself why children go to school? You will　　 probably say that they go to learn their 2 language and other　　 languages, arithmetic, geography, geometry, history, science and　　 3 subjects. That is 4 ; but why do they learn these things? And are　　 these things 5 that they learn at school?

　　     We send our children to school to　　 6 them for the time 7 they will be big and will go to work for　　 8 . Nearly 9 they study at school has some 10 use in their life, but is that the only　　 11 12 ?

　　     There is 13 in education than just learning facts. We go to school　　 14 all to learn how to learn, 15 when we have　　 16 school we can continue to learn. A man who really knows　　 17 to learn will always be successful, because 18 he has to do something now which he has never　　 had to do 19 , he will rapidly 20 how to do it in the best　　 21 . The uneducated person, on the 22 hand, is　　 23 unable to do something new, or 24 it badly. The purpose of schools, is not just to teach　　 languages, arithmetic, geography, etc. 25 to teach pupils the way to　　 learn.

(1) A. ever    B. sometimes    C. just    D. never

[    ]

(2) A. foreign    B. native    C. favorite    D. difficult

[    ]

(3) A. the all    B. all the other    C. all the    D. all another

[    ]

(4) A. wrong    B. not right    C. quite true    D. rather true

[    ]

(5) A. such    B. so    C. with    D. all

[    ]

(6) A. make    B. prepare    C. let    D. have

[    ]

(7) A. which    B. that    C. when    D. if

[    ]

(8) A. them    B. their own    C. themselves    D. theirs

[    ]

(9) A. something    B. anything    C. nothing    D. everything

[    ]

(10) A. practical    B. special    C. valuable    D. reasonable

[    ]

(11) A. question    B. answer    C. reason    D. reasonable

[    ]

(12) A. what do they go to school for

 B. what they go to school

 C. why do they go to school

 D. why they go to school

[    ]

(13) A. many    B. much    C. less    D. more

[    ]

(14) A. above    B. at    C. in    D. of

[    ]

(15) A. such that    B. so that    C. so as to    D. in order to   

[    ]

(16) A. gone    B. moved    C. entered    D. left

[    ]

(17) A. how    B. what    C. which    D. when

[    ]

(18) A. whenever    B. whatever    C. whichever    D. however

[    ]

(19) A. now    B. before    C. later    D. in future

[    ]

(20) A. tell himself　　 B. tell other

 C. teach himself    D. give others advice

[    ]

 (21) A. idea    B. way    C. method    D. means

[    ]

(22) A. one    B. same    C. other    D. next

[    ]

(23) A. also    B. too    C. either    D. neither

[    ]

(24) A. word    B. did    C. words    D. does

[    ]

(25) A. but    B. or    C. only    D. not

[    ]

阅读下面短文，掌握其大意，然后从1—25各题所给的四个选项中，选出一　　 个最佳答案。

    Today in China most of the parents can 1 the advanced education that their children need. And most of the students can 2 to pass　　 their examination 3 graduation from middle school. 4 , many of them are not able to 5 their education at college or university, 6 a few of the best students can 7 doctor's degrees a few years after graduation. Therefore, many of those who 8 senior middle school go to work as workers in factories or 9 in middle or primary schools, and 10 with the 11 they receive they buy books and 12 useful things needed to go on with 13 . To many of the 14 this is the most important 15 , during which they first begin to 16 themselves various kinds of subjects 　　 17 the help of lessons 18 on radio or TV, which will some day 19 to their great success in scientific invention, discovery and theory. Self-teaching is 20 that some of them may not be able to understand it now and 21 will not accept it 22 . Some people may 23 them, however, anyone who 24 his study and never gives it up will certainly be a 25 man.

　　  (1)A. spend　　 B. pay　　　　 C. pay for　　 D. give out  　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (2)A. try　　   B. manage　　  C. fail　　　　D. succeed 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (3)A. as　　　　B. when　　　　C. after　　   D. before 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (4)A. So　　　　B. While　　   C. However　　 D. Therefore 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (5)A. go over   B. go on with  C. take up　　 D. take on 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (6)A. which　　 B. there　　   C. where　　   D. in the place 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (7)A. give　　  B. admit　　   C. accept　　  D. receive 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (8)A. study in  B. give up　　 

　　　　 C. get out　　 D. graduate from 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (9)A. teachers  B. students　　C. managers　　D. principals 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (10)A. then　　 B. later　　   C. soon　　　　D. before long 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (11)A. pay　　  B. reward　　  C. prize　　   D. income 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (12)A. other　　B. the other   C. others　　  D. another 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (13)A. work　　 B. research　　C. education   D. efforts 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (14)A. workers  B. teachers　　C. grow-ups　　D. youths 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (15)A. time　　 B. course　　  C. period　　  D. step［　　］ 　　  (16)A. teach　　B. help　　　　C. learn　　   D. prepare 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (17)A. under　　B. with　　　　C. without　　 D. in  ［　　］ 　　  (18)A. given　　B. shown　　   C. designed　　D. learned 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (19)A. come　　 B. stick　　   C. lead　　　　D. belong 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (20)A. very long　　　　　　   B. too hard   　　　　  C. so difficult　　　　　　D. such a difficult work 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (21)A. still　　B. even　　　　C. yet　　　　 D. almost 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (22)A. all at once　　　　　　 B. in the future 　　　　  C. at the present time　　 D. now and then　　   ［　　］ 　　  (23)A. help　　 B. turn to　　 C. laugh at　　D. talk about 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (24)A. keeps on　　　　　　　　B. sticks to 　　　　  C. fixes his mind　　　　  D. belongs to　　　　 ［　　］ 　　  (25)A. brave　　B. great　　   C. useful　　  D. successful 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］　　

阅读下面短文，掌握其大意，然后从1￣25各题所给的四个选项中，选出一　　 个最佳答案。

    One kind of 1 that many Americans 2 is 　　 3 .

    Each summer 4 Americans drive to the countryside 　　 5 they find places to camp. The national parks, 　　 6 are in the mountains, are 7 camping places. Campers enjoy the fresh 　　 8 , the lakes and the forests which they find 　　 9 these parks. Campers hike (远足), swim and 　　 10 . They can also find many 11 animals and plants in the parks.　　 12 , campers relax. They enjoy a 13 from their busy lives 　　 14 . Some campers have trailers (拖车) 15 they drive or pull 　　 16 their cars to their camp 17 . Trailers are 　　 18 houses 19 wheels. They have many 20　　 which people have in their 21 , 22 electricity and hot water.　　 But most campers don't have trailers. They camp in 　　 23 which they 24 in their camp states. Campers in tents don't have the conveniences　　 that campers in trailers have. Tent campers 25 a very simple life.

　　  (1)A. vacation　　B. pleasure　　

　　     C. relaxation　　D. interest 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］  　　  (2)A. spend　　   B. enjoy　　　　C. make　　　　  D. do 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (3)A. fishing　　 B. swimming　　 C. hiking　　　　D. camping 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (4)A. millions of B. hundreds of  

　　　　 C. thousands of  D. dozens of 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (5)A. that　　　　B. where　　　　

　　　　 C. which　　   D. near which 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (6)A. which　　   B. some of them C. many of which D. where 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (7)A. various　　 B. favorite　　 C. satisfied　　 D. excited 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (8)A. sky　　　　 B. rivers　　   C. streams　　   D. air 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (9)A. around　　  B. beyond　　   C. in　　　　　　D. nearby 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (10)A. cook　　   B. fish　　　　 C. ski　　　　   D. rest 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (11)A. types　　  B. kinds of　　 

　　　　  C. hundreds of   D. numbers of 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (12)A. Maybe　　  B. Perhaps　　  C. Mostly　　　　D. Anyway 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (13)A. difference　　　　　　　　 B. chance　　    　　　　  C. change　　　　　　　　　　 D. place　　　　   ［　　］ 　　  (14)A. in the city　　　　　　　　B. in their homes   　　　　  C. in the country　　　　　　 D. on the farm　　 ［　　］ 　　  (15)A. on which   B. by which　　 C. in which　　  D. which 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (16)A. before　　 B. behind　　   C. after　　　　 D. near 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (17)A. parks　　  B. tents　　　　C. sites　　　　 D. sports 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (18)A. as　　　　 B. like　　　　 C.somewhat　　   D. as if 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (19)A. by　　　　 B. with　　　　 C. on　　　　　　D. without 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (20)A. tables　　 B. chairs　　   

　　　　  C. conveniences  D. convinces 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (21)A. homes　　  B. camps　　　　C. tents　　　　 D. parks 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (22)A. for example　　　　　　　　B. such as   　　　　  C. tents　　　　　　　　　　  D. parks　　　　   ［　　］ 　　  (23)A. trailers   B. such as　　  C. tents　　　　 D. sites 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (24)A. had bought B. put away　　 C. set up　　　　D. made 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (25)A. lead　　   B. live　　　　 C. enjoy　　　　 D. make 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］　　

完形填空

阅读下列短文，掌握其大意，然后从1-25各题所给的四个选项中，选出一个最佳答案

　　　In the past, American families tended __1__ quite large,and parents __2__ five or __3__ children were common. Over the years the __4__ of the family has decreased（减少）. One reason for this is __5__ in the cost of __6__. On the average, children attend schools for more years __7__ they __8__, making them financially dependent __9__ their families longer. Moreover, children nowadays are better __10__ and have __11__ money to spend __12__ entertainment. The parents usually take the responsibility __13__ all the expenses.

　　　Meanwhile, families are __14__ close than they used to be. More and more American mothers work away from home. The break up of the family occurs when the parents divorce（离婚）. A lot of children in the U.S. live part of their young __15__ with only one parent. __16__ families usually result in problems for children and parents alike. Children blame themselves when their parents __17__. They __18__ feeling unsettled as they are moved back and forth between parents.

　　　Usually one parent takes the responsibility for raising the children. These single parents must __19__ the children's emotional and psychological needs while also __20__ them financially. This is very demanding and leaves very little time for the parent's own personal interests. Single parents often marry other single parents. In this type of family, unrelated children are forced to __21__ brother or sister relationship.

　　　The situations of many American __22__ today are not good. However, recent signs indicate that things are getting __23__. The divorce rate is declining. The rate of __24__ is rising. Perhaps Americans have learned __25__ important families are.

阅读下面短文，掌握其大意，然后从1～25各题所给的四个选项中，选出一　　 个最佳答案。

    One cold winter afternoon, the postman was slowly 1 his mail cart up the hill that led out of the small town of Lance. He was walking very 2 because there was a lot of 3 on the 4 . He had only one more letter to deliver, and this 5 for an elderly lady who lived at the top of Lance Hill. Everybody 　　 6 her "Grandma".　　　　

    She had lived 7 ever since her daughter had 　　 8 to Hawaii many years 9 . She used to invite the postman 　　 10 for coffee whenever he 11 her a letter, and she would 　　 12 him about her two grand children in 13 , whom she had 　　 14 seen; however, she had lots of 15 of them, which　　 she used to 16 him.

　　     Just as the 17 approached her gate, a small boy came running 18 the hill. Suddenly the boy 19 on the ice and fell. The postman 20 his mail cart fall and hurried across the street to help the 21 . After a quick look, he saw that the boy 22 hurt his leg very badly. In fact, he was afraid that the boy's leg 23 broken. He knew that "Grandma" did　　 not have a telephone, 24 he stopped a passing driver and asked him　　 to 25 the boy to Lance Hospital.　　 　　　　

阅读下面短文，掌握其大意，然后从1～25各题所给的四个选项中，选出一　　 个最佳答案。

　　    There are many different kinds of taxes 1 in the U.S. The most 2 tax is the sales tax. When someone 　　 3 something, he pays the price of his purchase 4 a small additional percentage. This purchase is the sales tax. The revenue (税收) from the sales goes to the state government to help pay 5 public schools, 6 safety, roads, parks　　 and benefits 7 the poor. Each state sets its own tax percentage.　　 Some states are considerably lower than others. In some states there　　 is no sales tax.

　　     A second type of tax is the 8 tax. This tax is a percentage of all the money 9 by a family each year. Americans pay income taxes to the federal government 10 uses the revenue for national expenses 11 defense, help for the needy and other public services. Some states also have a state income tax. The income tax, 12 other taxes, is usually graduated. This means the tax percentage increases 13 a family's income increases.　　 　　

    A third kind of tax is the 14 tax. This tax is paid by anyone who 15 land or a house. The 16 of the tax is based on the property's 17 . The revenue from this tax goes to 　　 18 governments for school and community services.　　 　　

    In addition people must pay the luxury tax 19 they purchase　　 certain things such as cigarettes and alcoholic beverages (酒饮料).

　　     A fifth kind of tax is the inheritance tax (继承税). When someone 20 usually his family inherits the 21 person's wealth and property. However, those who inherit must pay a percentage of this 22 to the government 23 an inheritance tax.

　　 　　   　　 　　 24 we have heard, there are five kinds of taxes that Americans pay. 25 Americans don't want more taxes.　　 　　

　　  (1) A. paying   B. paid  C. to be paid  D. having paid 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (2) A. important　　 B. common　　C. private　　 D. public 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (3) A. sells　　　　 B. steals　　C. loses　　   D. buys 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (4) A. plus　　　　  B. times　　 C. minus　　   D. divided 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (5) A. for　　　　   B. to　　　　C. off　　　　 D. out 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (6) A. private　　   B. public　　C. official　　D. bosses 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (7) A. from　　　　  B. to　　　　C. for　　　　 D. off 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (8) A. salaries　　  B. income　　C. money　　   D. wages 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (9) A. to be earned  B. earning   C. earned　　  D. having earned 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (10) A. what　　　　 B. all what  C. where　　   D. which 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (11) A. for example  B. such as   C. for instance   D. they are 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (12) A. like　　 B. as   C. except　　  D. except that 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (13) A. before　　   B. unless　　C. as　　　　  D. even 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (14) A. houses　　   B. land　　  C. furniture   D. property 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (15) A. buys　　　　 B. owns　　  C. had　　　　 D. sells 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (16) A. amount　　   B. position  C. quality　　 D. reason 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (17) A. value　　　　B. position  C. percentage  D. importance 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (18) A. state　　　　B. local　　 C. federal　　 D. same 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (19) A. when　　　　 B. unless　　C. because　　 D. since 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (20) A. died　　　　 B. will die  C. dies　　　　D. dying 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (21) A. death　　　　B. dying　　 C. deadly　　  D. dead 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (22) A. money　　　　B. wealth　　C. amount　　  D. debt 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (23) A. like　　　　 B. as　　　　C. for　　　　 D. from 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (24) A. As　　　　   B. What　　  C. Which　　   D. That 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］ 　　  (25) A. No　　　　   B. Most　　  C. Few　　　　 D. Fewer 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］

完形填空

　　A little boy invited his mother to attend his school's first-teacher－parent meeting. To the little boys 1 , she said she would go. This 2 be the first time that his classmates and teacher 3 his mother and he felt 4 of her appearance. Although she was a beautiful woman, there was a severe scar(疤痕) that 5 nearly the entire right side of her face. The boy never wanted to 6 why or how she got the scar.

　　At the meeting, the people were 7 by the kindness and natural beauty of his mother 8 the car, but the little boy was still embarrassed(尴尬) and 9 himself from everyone. He did, however, get within 10 of a conversation between his mother and his teacher.

　　The teacher asked 11 , “How did you get the scar on your face?”

　　The mother replied, “12 my son was a baby, he was in a room that caught fire. Everyone was 13 afraid to go in because the fire was 14, so I went in. As I was running toward his bed, I saw a long piece of wood coming down and I placed myself over him trying to protect him. I was knocked 15 but fortunately, a fireman came in and saved both of us.” She 16 the burned side of her face, “This scar will be 17, but to this day, I have never 18 what I did.”

　　At this point, the little boy came out running toward his mother with tears in his eyes. He held her in his arms and felt a great 19 of the sacrifice(牺牲) that his mother had made for him. He held her hand 20 for the rest of the day.

1．

[　　]

2．

[　　]

3．

[　　]

4．

[　　]

5．

[　　]

6．

[　　]

7．

[　　]

8．

[　　]

9．

[　　]

10．

[　　]

11．

[　　]

12．

[　　]

13．

[　　]

14．

[　　]

15．

[　　]

16．

[　　]

17．

[　　]

18．

[　　]

19．

[　　]

20．

[　　]

完形填空

　　Trees are useful to 1 in three very important 2 : They provide him with wood and other 3 ; they give him shade; they help to prevent drought and 4 . Unfortunately, in many 5 of the world, man has not realized that the third of these services is 6 important.

　　Two thousand years 7 a rich and powerful country cut down its trees 8 warships, with which to gain itself an empire. It gained the empire but, 9 its trees, its soil became hard and 10 . When the empire fell 11 , the home country found itself faced by floods and starvation.

　　Even where a government realizes the importance of a plentiful supply of trees, it is difficult for 12 to persuade the villager to see this. The villager wants wood to cook his food 13 ; and he can earn money 14 making charcoal or selling wood to the townsman. He is usually too lazy or too careless to plant and look 15 new trees. So, unless the government has a good system of control, or can 16 the people, the forests will slowly disappear.

　　This does not only 17 that the villagers' sons and grandsons have 18 trees. The results are even more 19 : for where 20 are trees, their roots break the soil up－allowing the rain to sink in－and also bind(结合) the soil, thus preventing its 21 washed away easily, but where there are no 22 , the rain falls 23 hard ground and carrying 24 with it the rich top soil, in which crops 25 so well When all the top soil is gone, nothing remains but worthless desert.

1．

[　　]

2．

[　　]

3．

[　　]

4．

[　　]

5．

[　　]

6．

[　　]

7．

[　　]

8．

[　　]

9．

[　　]

10．

[　　]

11．

[　　]

12．

[　　]

13．

[　　]

14．

[　　]

15．

[　　]

16．

[　　]

17．

[　　]

18．

[　　]

19．

[　　]

20．

[　　]

21．

[　　]

22．

[　　]

23．

[　　]

24．

[　　]

25．

[　　]

完形填空

　　Scientists are learning more about our need for sleep. Most people sleep 1 eight hours each night. Some people sleep more than 2 and others sleep as few as two or three hours each night. Scientists do not know exactly 3 some people sleep more than others. Dr. Ernest Hartman has a(n) 4 about this. He believes the 5 of sleep depends on how a person attacks problems. He said people who need only a few 6 sleep usually are people who have much energy and make good 7 of time to get their work 8 quickly. But he said many people who sleep 9 than normal do creative work and seem to need 10 dreaming time to find 11 to emotional problems. Some scientists agree with this idea and others argue.

　　To determine the results of the 12 of sleep, scientists have put subjects 13 a set of mental and performance tests 14 them, for instance, 15 columns of numbers or recall a passage 16 to them only minutes earlier, “We've found 17 you're in sleep deficit(缺乏), performance 18 ,” says Dr. David. Short-term memory is 19 , as are abilities to 20 decisions and to concentrate.

1．

[　　]

2．

[　　]

3．

[　　]

4．

[　　]

5．

[　　]

6．

[　　]

7．

[　　]

8．

[　　]

9．

[　　]

10．

[　　]

11．

[　　]

12．

[　　]

13．

[　　]

14．

[　　]

15．

[　　]

16．

[　　]

17．

[　　]

18．

[　　]

19．

[　　]

20．

[　　]

完形填空

　　The sea is also very big. Look at a map of the world. There is more sea than land. The sea covers 1 of the world.

　　The sea is also very 2 in some places. There is one spot near Japan, where the sea is nearly eleven 3 deep. The highest mountain in the world is about 4 kilometers high. If that mountain 5 into the sea at that place, there 6 two kilometers of water above it.

　　If you 7 in the sea, you know that the sea water is salty. You can taste the salt. Rivers, 8 flow into the sea, carry salt from the land into the sea, 9 the Dead Sea, which is very salty. 10 it is very salty, swimmers can't sink! Fish can not live in the Dead Sea.

　　In 11 parts of the sea, there are plenty of fish and plants. Some live near the top of sea; 12 live deep down. There are also millions of tin living things that float in the sea. These 13 things are very small. It is hard to see them. Many fish live 14 eating them.

　　The sea can be very 15 . Divers, 16 dive deep down in the sea, know this. The top of the water may be warm. When the diver goes 17 , the sea becomes colder and colder.

　　Another thing happens, when the diver goes 18 , the water above presses 19 on him. It squeezes(压榨) him. Then the diver has to wear clothes 20 metal.

1．

[　　]

2．

[　　]

3．

[　　]

4．

[　　]

5．

[　　]

6．

[　　]

7．

[　　]

8．

[　　]

9．

[　　]

10．

[　　]

11．

[　　]

12．

[　　]

13．

[　　]

14．

[　　]

15．

[　　]

16．

[　　]

17．

[　　]

18．

[　　]

19．

[　　]

20．

[　　]