Question

      Advice to “sleep on it” could be well founded, scientists say. After a good night’s sleep a problem that seemed impossible to solve the night before can often appear easier, although no evidence has proved this by now. But researchers at the University of Luebek in Germany have designed an experiment that shows a good night sleep can improve insight and problem-solving. “If you have some newly acquired memories in your brain, sleep acts on these memories, restructures(重建) them, so that after sleep the insight into a problem which you could not solve before increases,” said Dr. Jan Born, a neuroscientist, at the university. To test the theory, they taught volunteers two simple rules to help them put a string of 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 remainders were forced to stay awake. 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 restructuring of memories occurs or what governs it or in which stage of sleep it works. Pierre Marquette and Pierre Ruby of the University of Liege in Belgium and the experimental evidence supports the suggestions that sleep can promote creative thinking . Although the role of sleep in human activity will still be a mystery, the researcher gives good reason to fully respect their period of sleep, they added.

50. The underline phrase “sleep on it ” in the first line probably means _______ .

   A. to put something aside to be solved until the next day

   B. to get as much sleep as possible

   C. to go on sleeping without being disturbed

   D. to sleep till you get up the next morning

51. Jan Born and his team carried out the experiment through ________.

   A. comparison    B. interview     C. survey       D. imagination

52. It can be inferred from the passage that _______.

   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 restructures memories

53. What would be the best title for the passage ?

   A. How Sleep Works                B. Sleep Helped Solve Problem

C. No Evidence , But Well Founded    D. Born’s Discovery On Sleep

54. Where is the passage most likely to have been taken from ?

   A. A science fiction     B. A book review     C. An advertisement      D. A newspaper.

   

Answer 1

AACBD