阅读理解Nooneknowswhywesleepbutit’-查字典问答网
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  阅读理解Nooneknowswhywesleepbutit’scertainthatweneedto.Peoplewhoarepreventedfromsleepingbegintosufferobviouseffectsafterafewdays-theythinklessclearlyandtheyfall

  阅读理解

  Nooneknowswhywesleepbutit’scertainthatweneedto.Peoplewhoarepreventedfromsleepingbegintosufferobviouseffectsafterafewdays-theythinklessclearlyandtheyfallasleepduringtheworkinghours.

  Therearenorulesaboutsleep.Generallyspeakinggrown-upssleepabout7andahalfhourseachnightandprobablymorethan60percentgetbetweensevenandeighthours.Butperhapseightpercentarequitehappywith5hoursorlessandfourpercentorsofindthattheywanttenhoursormore.Ifyoufeelallrightyou’reprobablygettingenoughsleep.Theimportantthingisnottoworryhowmuchotherpeopleget-theirneedsmaybedifferent.Exercisedoesn’tseemtoincreasetheneedforsleep-officeworkersforexamplesleepforaboutaslongaspeopledoingphysicallyactivework.

  Childrensleepmorethangrown-ups-perhaps14to18hourssoonafterbirthgoingdowntogrown-uplevelsbyearlyteenage(青少年).Sleeppatternsalsotend(倾向)tobedifferentintheoldpeoplewhomaysleeplessatnightthantheydidwhenyoungerfindsleepgettingmorebrokenandoftenmakeitaruletosleepduringthedaytime.

  (1)

  Somepeoplecan’tthinkclearlybecause________.

  []A.

  theyhavebadmemory

  B.

  theyfeelsleepyduringtheworkinghours

  C.

  theydon’thaveenoughsleep

  D.

  theyarecertaintobekeptfromgoingtobed

  (2)

  Whetheryouhavegotenoughsleepisjudged(判断)by________.

  []A.

  howmanyhoursyouhaveslept

  B.

  howmanyhoursyouneedtosleep

  C.

  ifyoudoexerciseandphysicalwork

  D.

  ifyoufe

1回答
2020-04-08 08:37
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阮亮中

  答案:1.C;2.B;3.D;4.A;解析:(1)A、B两个答案是睡眠的结果而不是导致人们思维不清的主要原因,故不能选,D也不能说明原因.由第二段我们知道,睡眠不足是引起人们思维混乱的根本原因.(2)短文的第...

2020-04-08 08:38:50

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