Advice to "sleep on it" could be well founded, scientists say. After a good

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问题    Advice to "sleep on it" could be well founded, scientists say. After a good night’s sleep, a problem that seemed insurmountable (不能克服的) the night before can often appear more【S1】______. although the evidence until now has been anecdotal (轶事的).
But researchers at the University of Luebek in Germany have designed an experiment that shows a good night’s sleep can【S2】______insight and problem-solving. Dr. Jan Born, a neuroscientist at the university, and his team taught volunteers two simple rules to help them【S3】______a string of numbers into a new order. There was also a third,【S4】______rule, which could help them increase their speed in solving the problem. The researchers divided the volunteers into two groups: half were allowed to sleep after the training while the【S5】______were forced to stay awake. They noticed that the group that had slept after the training were twice as【S6】______to figure out the third rule as the other group.
"You have a memory representation in your brain of the problem you want to solve, and then you sleep. Sleep can act on the problem," Born said in a telephone interview. But he also admitted that how restructuring of memories occurs or what governs it is still【S7】______.
Other scientists say the【S8】______evidence supports the anecdotal suggestions that sleep can stimulate creative thinking.
Although the role of sleep in human creativity will【S9】______be a mystery, the research gives people good reason to【S10】______respect their periods of sleep.
[A] hidden       [F] manageable [K] unknown
[B] experimental  [G] complex [L] reminder
[C] fully       [H] prevent [M] convert
[D] remainder    [I] uninvented [N] improve
[E] strengthen [J] still    [O] likely [br] 【S3】

选项

答案 M

解析空前的help them和空后的a string of numbers表明，本空应填一原形动词。a string of numbers和a new order之间是形式发生变化，备选项中有“改变形式，转化”之义且能与into搭配的是convert“转化”，故答案为[M]convert。

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