考研英语真题(张剑)

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年试题与分析

SectionⅠUseofEnglish

Sleepisdividedintoperiodsofso-calledREMsleep,characterizedbyrapideyemovementsanddreaming,andlonger

periodsofnon-REMsleep.1kindofsleepisatallwell-understood,butREMsleepis2toservesome

restorativefunctionofthebrain.Thepurposeofnon-REMsleepisevenmore3.Thenewexperiments,suchasthese

4forthefirsttimeatarecentmeetingoftheSocietyforSleepResearchinMinneapolis,suggestfascinatingexplanations

5ofnon-REMsleep.

Forexample,ithaslongbeenknownthattotalsleep6is100percentfataltorats,yet,7_examinationsofthedead

bodies,theanimalslookcompletelynormal.Aresearcherhasnow

8themysteryofwhytheanimalsdie.Therats9bacterialinfectionsoftheblood,10theirimmunesystems

—theself-protectingmechanisrnagainstdisease—hadcrashed.

1.[A]Either[B]Neither[C]Each[D]Any

2.[A]intended[B]required[C]assumed[D]inferred

3.[A]subtle[B]obvious[C]mysterious[D]doubtful

4.[A]maintained[B]described[C]settled[D]afforded

5.[A]inthelight[B]byvirtue[C]withtheexception[D]forthepurpose

6.[A]reduction[B]destruction[C]deprivation[D]restriction

7.[A]upon[B]by[C]through[D]with

8.[A]paidattentionto[B]caughtsightof[C]laidemphasison[D]castlighton

9.[A]develop[B]produce[C]stimulate[D]induce

10.[A]if[B]asif[C]onlyif[D]ifonly

一、文章结构总体分析

睡眠分为浅睡阶段和较长时间的深睡阶段。虽然人们对两个阶段的睡眠都不是十分了解，但是人们推测浅睡对

大脑起修复作用。深睡的作用更令人难以理解。在最近睡眠研究协会的会议上，专家们首次描述的新实验，对非快

眼动睡眠的作用进行了吸引人的阐释。因剥夺睡眠而死亡的老鼠的尸体检查发现，其免疫系统似乎已崩溃了。

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