2. 外语
  3. During a period of sleep deprivation the effects of sleeplessness may become ______.

During a period of sleep deprivation the effects of sleeplessness may become ______.

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问题 During a period of sleep deprivation the effects of sleeplessness may become ______.
选项 A、total
B、increased
C、collective
D、cumulative
答案D
解析 语义连贯题。所填词能够修饰effect，并且这种影响是由于一段时间的睡眠缺乏引起的，所以选[D]cumulative“累积的，累加的”。[A]total“总的”，修饰number，amount，cost等词；[B]increased“增长的”；[C]collective“集体的，共同的”，是相对于单个个体来说的。
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大学英语六级

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