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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  101
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. "
【C1】
选项 A、snack
B、nap
C、sleep
D、exercise
答案B
解析 名词辨义题。全文第一句说明：naps(小睡，打盹)help lock in sometimes fleeting long-term memories。该句是对首句的补充说明，即白天小睡90分钟对巩固记忆最有效。故应选择nap。snack意为“小吃，点心”；sleep虽也表示睡觉的意思，但是含义过广，不能体现出该文强调的“白天小睡”；exercise“运动”，与原义无关。
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大学英语四级

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