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10．Advice to"sleep on it"could be well founded，scientists say．After a good night's sleep a problem that couldn't be solved the night before can often appear more manageable，although the evidence（證據）until now has been personal experience．But researchers at the University of Luebek in Germany have designed an experiment that shows a good night's sleep can improve insight（洞察力）and problem-solving．
"If you have some newly-got memories in your brain，sleep acts on these memories and rebuild them，so that after sleep the insight into problem which you could not solve before increases，"said Dr Jan Born，a neuroscientist（神經病學專家）at the university．To test the theory，they taught volunteers two simple rules to help them turn some numbers into a new order．There was also a third，hidden 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 rest were forced to stay awake．Dr Jan Born and his team noticed that the group that had slept after the training were twice as likely to figure out the third rule as the other group．"Sleep helped，"Born said in a telephone interview．"The important thing is that you have to have a memory representation in your brain of the problem you want to solve and then you sleep，so it can act on the problem．"But Born admitted that he and his team don't know how rebuilding of memories occurs or what governs it．Pierre Maquet and Perrine Ruby of the University of Liege in Belgium said the experimental evidence supports the suggestions that sleep can help develop creative thinking．Although the role of sleep in human creativity will still be a mystery，the research gives people good reason to fully respect their periods of sleep，they added．

60．The underlined phrase"sleep on it"in Paragraph 1probably meansA．
A．to delay deciding something until the next day
B．to get as much sleep as possible
C．to go on sleeping without being disturbed
D．to sleep till after the time you usually get up in the morning
61．Jan Born and his team carried out the experiment throughA．
A．comparison       B．interview       
C．survey           D．imagination
62．It can be inferred from the passage thatC．
A．people should sleep so long as they have time
B．sleep is the only way to solve hard problems
C．people have various periods of sleep   
D．people know how sleep rebuilds memories
63．What would be the best title for the passage？B
A．How Sleep Works．                 B．Sleep Helps Solve Problems．
C．No Evidence，But Well Founded．   D．Born's Discovery on Sleep．

分析 本文為科普類說明文，文章通過講述了一個實驗研究，證實一個常見的很有道理的說法"把問題留在第二天解決"．實驗結果顯示了良好的睡眠可以提高人們的洞察力和有助于解決問題．由此作者提出，雖然睡眠在人類創(chuàng)造力中的作用仍然是一個謎，但是我們應該尊重自己的睡眠時間．

解答 60．答案是A． 詞義辨析題；根據第一段After a good night's sleep a problem that seemed impossible to solve the night before canoften appear easier，可知前一天不能解決的問題放到第二天就有可能解決了．由此推知，"sleep on it"的意思是"把某事放到第二天再解決"．故選A．
61．答案是A．結構理解題；根據第三段The researchers divided the volunteers into two groups，half were allowed to sleep after the training while the remainders were forced to stay awake．可知Jan Bom和他的團隊通過兩個小組的對比做了實驗．故選A．
62．答案是C．理解推斷題；根據最后一段the research gives people good reason to fully respect their periods of sleep，可知這個研究為人們充分尊重他們的睡眠時間提供了很好的理由．由此推知，人們有各種各樣的睡眠時間．故選C．
63．答案是B．主旨大意題．本文主要通過一個實驗研究說明了良好的睡眠可以提高洞察力和解決問題．故選B．

點評 閱讀要在整體理解文章的基礎上，根據題干中關鍵詞定位細節(jié)，然后對照選項做出合理的判斷．如果是主旨大意的判斷要把握文章整體，避免以偏概全．

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