2012年12月大学英语六级作文写作技巧(34)( V2 @$ B# o( O' V2 T
Cloze Test 3 Q& H0 t3 H9 a5 o% N
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.
0 Y! h' e" `- Q8 Y5 V7 ]1 q 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. ) @5 W/ k+ d- m1 c/ B G5 P- Z
41. [A] Either [B] Neither [C] Each [D] Any www.examｗ.com
3 U6 u7 }* n0 r) a) A 42. [A] intended [B] required [C] assumed [D] inferred
* c: n: s/ d! O1 Q 43. [A] subtle [B] obvious [C] mysterious [D] doubtful
o5 C/ U, a+ G$ X5 D 44. [A] maintained [B] described [C] settled [D] afforded
$ _2 Z! q. T- X. P- s 45. [A] in the light [B] by virtue [C] with the exception [D] for the purpose 1 K y0 C, D4 z: {2 L5 b
46. [A] reduction [B] destruction [C] deprivation [D] restriction
# n- i; i4 k0 n+ J% |/ U h 47. [A] upon [B] by [C] through [D] with " e( g7 i* L5 F" A1 T, O
48. [A] paid attention to [B] caught sight of [C] laid emphasis on [D] cast light on $ [0 {- T" g0 p. r2 D
49. [A] develop [B] produce [C] stimulate [D] induce
/ j: i; _9 J1 | 50. [A] if [B] as if [C] only if [D] if only |
发表于 2012-8-14 10:35:42
