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  3. New research conducted by brain researcher Avi Karni of the University of Haifa in Israel explores the possibility that naps hel

New research conducted by brain researcher Avi Karni of the University of Haifa in Israel explores the possibility that naps hel

admin2012-09-19  51
问题     New research conducted by brain researcher Avi Karni of the University of Haifa in Israel explores the possibility that naps help lock in sometimes fleeting long-term memories. A 90-minute daytime【C1】______. might help the most, the study finds.
    "We still don’t know the【C2】______mechanism of the memory process that occurs during sleep, but the【C3】______of this research suggest it is possible to【C4】______up memory consolidation," Karni said.
    Long-term memory【C5】______to  memories that stay with us for years, such as "what" memories -- a car accident that happened yesterday -- or " how to " memories, such as one’s learned【C6】______to play the drums.
    Karni, who【C7】______the study in a recent issue of the journal Nature Neuroscience,【C8】______participants to learn a complex thumb-tapping sequence, then【C9】______the study subjects into two groups: one that【C10】______for an hour, and one that didn’t. The people who took an afternoon snooze showed【C11】______improvement in their performance by that evening.
    "After a night’s sleep the two groups were at the same【C12】______, but the group that slept in the afternoon【C13】______much faster than the group that stayed【C14】______," Karni said.
【C15】______, the study also showed just how much【C16】______a 90-minute nap could help lock in long-term memories.
    "Daytime sleep can【C17】______the time ’how to’ memory becomes【C18】______to interference and forgetting," Karnl said. "【C19】______of 6 to 8 hours, the brain【C20】______the memory during the 90-minute nap. "
【C14】
选项 A、weak
B、sleepy
C、aware
D、awake
答案D
解析 形容词辨义题。从much faster than 可判断该处是在做对比，所以应选择一个与sleep in the after noon在意思上相对的词，即awake“醒着的”。weak意为“虚弱的”，与原文无关联；sleepy意为“困的，想睡的”，与该句前半句构不成对比关系；aware意为“意识到的，知道的”，不符合句意。
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