2012年12月大学英语六级作文写作技巧(38)

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2012年12月大学英语六级作文写作技巧(38)
　总分总结构举例
　　Cloze Test 3
　　Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer periods of non-REM sleep. 41 kind of sleep is at all well-understood, but REM sleep is 42 to serve some restorative function of the brain. The purpose of non-REM sleep is even more 43 . The new experiments, such as these 44 for the first time at a recent meeting of the Society for Sleep Research in Minneapolis, suggest fascinating explanations 45 of non-REM sleep.
- v9 J" U( W  D. i  y　　For example, it has long been known that total sleep 46 is 100 percent fatal to rats, yet, 47 examination of the dead bodies, the animals look completely normal. A research has now 48 the mystery of why the animals die. The rats 49 bacterial infections of the blood, 50 their immune systems-the self-protecting mechanism against diseases-had crashed.
　　41. [A] Either [B] Neither [C] Each [D] Any
　　42. [A] intended [B] required [C] assumed [D] inferred 来自www.Examw.com
　　43. [A] subtle [B] obvious [C] mysterious [D] doubtful
  M8 z& {1 @" |; F- c4 a　　44. [A] maintained [B] described [C] settled [D] afforded
　　45. [A] in the light [B] by virtue [C] with the exception [D] for the purpose
　　46. [A] reduction [B] destruction [C] deprivation [D] restriction
　　47. [A] upon [B] by [C] through [D] with
; \/ G9 i# d; a  F& h+ A* j　　48. [A] paid attention to [B] caught sight of [C] laid emphasis on [D] cast light on
1 S* H1 ]) R# J　　49. [A] develop [B] produce [C] stimulate [D] induce
　　50. [A] if [B] as if [C] only if [D] if only