U. S. researchers suggest sleeping can help us remember things we have just learnt. A team from Northwestern University【C1】_____

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问题     U. S. researchers suggest sleeping can help us remember things we have just learnt. A team from Northwestern University【C1】______that a 90-minute nap(小睡)can help people learn a new skill. The【C2】______on their research is published in the June edition of the journal Nature. The scientists say: "Information acquired during waking can be reactivated(重新激活)during sleep,【C3】______memory stabilization. " Test volunteers practiced musical tunes before and after a short sleep.【C4】______the nap, the researchers played one of the tunes the volunteers had practiced. The team found that the participants made【C5】______errors when playing the tune that had been played while they slept.
    Study co-author Dr Pau J. Reuber points out the research might not work【C6】______learning a foreign language while you sleep. He said: "The critical【C7】______is that our research shows that memory is strengthened for something you’ve already learned. " He added: "Rather than learning something【C8】______in your sleep, we’re talking about enhancing an existing memory by reactivating information recently acquired. "【C9】______, Dr Reuber did say there were possibilities for language learners; "If you were learning【C10】______to speak in a foreign language during the day, for example, and then tried to reactivate those memories during sleep, perhaps you might enhance your learning," he said.
【C6】

选项 A、with
B、for
C、by
D、upon

答案A

解析 从句的主语是the research(研究),因此可推断句中谓语动词work的意思为“起作用,有效果”,空格中应填入一个表示“在……方面,对于”之类意思的介词。四个选项中,A项with意为“concerning,in the case of(对于,至于)”,因此A是正确答案,work with learning a foreign language意为“对于学外语起作用”。介词for表示对象或目的,by表示手段或工具,upon不能与work搭配,因此这三个都是干扰选项。
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