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2013年12月英语六级完形填空训练(3)
日期:2013-08-15 17:00

(单词翻译:单击)

练习题

  Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer periods of non-REM sleep. 1 kind of sleep is at all well-understood, but REM sleep is 2 to serve some restorative function of the brain. The purpose of non-REM sleep is even more 3 . The new experiments, such as these 4 for the first time at a recent meeting of the Society for Sleep Research in Minneapolis, suggest fascinating explanations 5 of non-REM sleep.
  For example, it has long been known that total sleep 6 is 100 percent fatal to rats, yet, 7 examination of the dead bodies, the animals look completely normal. A research has now 8 the mystery of why the animals die. The rats 9 bacterial infections of the blood, 10 their immune systems-the self-protecting mechanism against diseases-had crashed.
  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] in the light [B] by virtue [C] with the exception [D] for the purpose
  6. [A] reduction [B] destruction [C] deprivation [D] restriction
  7. [A] upon [B] by [C] through [D] with
  8. [A] paid attention to [B] caught sight of [C] laid emphasis on [D] cast light on
  9. [A] develop [B] produce [C] stimulate [D] induce
  10. [A] if [B] as if [C] only if [D] if only

参考答案

  参考答案:1.B 2.C 3.C 4.B 5.D 6.C 7. A 8.D 9.A 10.B

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重点单词
  • functionn. 功能,函数,职务,重大聚会 vi. 运行,起作用
  • exceptionn. 除外,例外,[律]异议,反对
  • restrictionn. 限制,约束
  • reductionn. 减少,缩小,(化学)还原反应,(数学)约分
  • obviousadj. 明显的,显然的
  • virtuen. 美德,德行,优点,贞操
  • stimulatevt. 刺激,激励,鼓舞 vi. 起刺激作用
  • destructionn. 破坏,毁灭,破坏者
  • mechanismn. 机制,原理 n. 机械,机构,结构
  • inducevt. 引起,引诱,导致