2012年12月大学英语六级作文写作技巧(34)
/ J# T7 t$ c0 T$ @& h% K Cloze Test 3 ! [: D! L) j1 ~
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.
' D3 [) Q; E0 A% J 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.
9 h: H* \9 @) G* d 41. [A] Either [B] Neither [C] Each [D] Any www.examｗ.com
- |* e. w: H7 Y$ d7 e5 I 42. [A] intended [B] required [C] assumed [D] inferred
4 k( s3 _& {5 e5 Z; Y$ `- W& \7 E 43. [A] subtle [B] obvious [C] mysterious [D] doubtful
+ i4 f9 X2 ~% Z9 I 44. [A] maintained [B] described [C] settled [D] afforded
5 m0 |; X; v+ x) e& {/ ~ 45. [A] in the light [B] by virtue [C] with the exception [D] for the purpose
) O% A9 c3 q' D 46. [A] reduction [B] destruction [C] deprivation [D] restriction
$ S- L: r5 E, ^, ~ 47. [A] upon [B] by [C] through [D] with
7 `4 s+ J: J! |. g1 e# A 48. [A] paid attention to [B] caught sight of [C] laid emphasis on [D] cast light on
! r9 T9 _5 ? N+ h) ]8 R5 K 49. [A] develop [B] produce [C] stimulate [D] induce 7 A% x0 C4 D2 r3 F
50. [A] if [B] as if [C] only if [D] if only |
发表于 2012-8-14 10:35:42
