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  Enough sleep is important to health. The amount of sleep needed depends on the age of the person and the conditions in which sleep   1   . The young may need more sleep than the old, but   2  eight hours are enough for the   3  of grownups.

Some can   4  with less than this amount () but   5  may need more. Every person knows his own need. It is then a matter of how to   6  it. Sleep should always be 7  to make one relaxed (松弛) and ready for   8   work.

    Fresh air is   9  to sound sleep (酣睡). It is not   10  reason for some people to   11  that it is practical to sleep in the open air.    12  a person can keep himself warm,  13  sleeping probably gives the body a bad complete relaxation.

    Ability to sleep is largely a   14  . The conditions referred to only lead to sleep. Out-of-door   15   , a good habit of regular   16  and the avoidance (避免) of late eating and   17  are all helpful to sound sleep. Such factors (因素) are largely within the   18  of any person. A bath at   19   , neither hot nor cold but of body temperature may be helpful to sleep. Sleeping pills (安眠药) should   20   be taken except when suggested by a doctor.

1. A. falls down        B. breaks out        C. wakes up          D. takes place

2. A. seldom          B. sometimes            C. always            D. generally

3. A. health         B. heads              C. night         D. work

4. A. wake        B. work         C. do          D. finish

5. A. children          B. women          C. others         D. few

6. A. help          B. satisfy          C. demand      D. take

7. A. deep          B. enough           C. short          D. long

8. A. hard          B. his own       C. a day's            D. good

9. A. necessary        B. able           C. no good        D. beat

10. A. the best        B. at all           C. without          D. a good

11. A. suggest      B. understand     C. insist          D. agree

12. A. As         B. Where           C. Unless        D. When

13. A. good       B. cold           C. out-of-door      D. inside

14. A. practice          B. pleasure        C. problem           D. habit

15. A. walks         B. exercises         C. trips       D. housework

16. A. hours         B. drinking          C. dreams         D. medicine

17. A. worry         B. fear           C. carelessness     D. hard work

18. A. fight         B. plan            C. control        D. thought

19. A. any time       B. bedtime         C. midnight       D. lunch time

20. A. never       B. slowly       C. often      D. always

 

答案:D;D;A;C;C;B;B;C;A;C;C;D;C;D;A;B;A;C;B;A
解析:

第1题,本句的完整意思应是“所需的睡眠时间取决于人的年龄以及睡眠所处的环境”,根据句意,应选D。

    第2题,本文所述的是通常情况,而不是偶尔情况,也不是绝对情况,故选D。

    第3题,对于成年人的身体而言,8小时的睡眠时间是足够了。

    第4题,do在这里表示“可行”,句意是“有些人每天没有8小时睡眠也能应付日常工作不影响身体健康。”

    第5题,根据前面的some,这里应用others,指另一些人的情况,两者相对而言,指同一类人中的不同情况。

    第6题,既然每一个人都知道自己需要多少睡眠时间,那么应该满足这一需要,故选B。

    第7题,这一句实际上是对为什么要satisfy one's need for sleep作一解释,因为足够的睡眠可以使人感到松弛,能应付新的一天的工作。故本题选B。

    第8题,据上题分析,选C。指任何一天的工作,而不是仅对繁重的工作而言,故不选A。也不是仅对自己的工作而言,故也不能选B。

    第9题,指清新的空气对酣睡是必要的。

    第10题,对于有些人坚持认为在露天睡眠比较实际这一观点,作者认为有道理。not without表示肯定,这样语气较委婉。

    第11题,根据that从句中的动词形式,可看出从句的内容不是某些人的建议,而是他们坚持的一个事实,故不选A,而选C。

    第12题,户外睡眠必须有一个条件,也就是小心不要着凉,因此本题应选D,这里when相当于if,表示条件。

    第13题,与前一句相呼应,这里指户外睡眠,应选C。

    第14题,一个人的睡眠还有一个能力问题,而能睡不能睡主要还是一个人的生活习惯,下文主要讲述了生活习惯对于睡眠的重要性,故本题应选D。

    第15题,指户外散步习惯。walk作“散步“解时为可数名词。不可数名词exercise表示户外活动。

    第16题,指有节制的饮酒习惯。

    第17题,指日常烦恼的事情,这里名词worry与late eating并列,作the avoidance of的宾语。本句有三个并列主语,即①out-of-door walks,②a good habit 0f regular drinking,③the avoidance of late eating and worry,因此句中谓语动词用复数are。

<p>    第18题,上述生活习惯任何人都是可以调节或控制的,故选C。

    第19题,指睡觉前的洗澡习惯,其他时间均不符合文意。

    第20题,根据下文except when.…这里应选A,表示全部否定中尚有例外。

 


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