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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  47
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. "
【C8】
选项 A、forbade
B、ordered
C、instructed
D、forced
答案C
解析 动词辨义题。participants to learn a complex thumb-trapping sequence“研究参与者学习一套复杂的拇指操”。因本句主语为研究人员Karni，故从Karni的角度讲应该是“指导”参与者们学习拇指操。所以应选择instruct sb to do sth.“指导某人做某事”的搭配。forbid意为“禁止”；order意为“命令”；force意为“强迫”，虽三者均可跟to引导的不定式，但意思上差别较大。作为研究人员Karni不会禁止、命令或强迫参与者做什么，故排除。
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大学英语四级

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