Scientists say they now have proof to support the old-fashioned advice that it's best to sleep on a problem. They say sleep strengthens the memory and helps the brain organize the masses of information we receive each day.
Lead researcher Bob Stickgold at the Harvard Medical School said, "Sleep helps us draw rules from our experiences. It's like knowing the difference between dogs and cats even if it's hard to explain."
The US research team studied how well students remembered connections between words and symbols (象征) , reports New Scientist. They compared how the students performed if they had had a sleep between seeing the words and having the test, and if they had not slept. They found that people were better able to remember lists of related words after a night's sleep than after the same time spent awake during the day. They also found it easier to remember themes (主題) that the words had in common. But they forgot around one in four more themes if they had been awake. Prof. John Groeger, of Surrey University's Sleep Research Centre, said, "People have been trying for years to find out what the purpose of sleep is, as we know that only certain parts of it have a restorative (有助恢復的) value. " "We form and store huge numbers of experiences in the head every day, and sleep seems to be the way the brain deals with it all."
1.The phrase" to sleep on a problem" in Paragraph 1 most likely means to______.
A. pay full attention to a problem B. wait until later for a decision
C. sleep to forget a problem D. have difficulty sleeping
2.In the study by the US research team, students were asked to______.
A. put together words of similar meanings
B. remember words and their meanings
C. show their knowledge of words
D. make up lists of related words
3.Which of the following may be easier to remember?
A. Themes learned right before the test
B. Rules from personal experience
C. Words learnt before a good sleep
D. Ideas stored together in the brain
4.What may be the importance of the research?
A. It shows sleep may help us manage information
B. It helps find out the common themes of word
C. It tells us that more sleep can improve health
D. It proves the value of old-fashioned advice
1.B
2.B
3.C
4.A
【解析】
試題分析： 本文講述的睡眠對人的記憶的影響，在睡覺之前背誦的東西，醒了以后更加容易被記得。
1..B 推理題。根據本句Scientists say they now have proof to support the old-fashioned advice that it's best to sleep on a problem.是指帶著問題入睡，也就是指暫時無法解決問題，或者記不住，或想不起來。要等到醒了以后再說。故B項符合上下文。
2.B 推理題。根據第3段2,3,4行. They compared how the students performed if they had had a sleep between seeing the words and having the test, and if they had not slept. They found that people were better able to remember lists of related words after a night's sleep than after the same time spent awake during the day可知這個研究主要是針對單詞和象征之間的聯系。研究學生在睡著以后，再醒來和一直醒著。哪一種記憶的效果更好。故B正確。
3.C 細節題。根據第三段4,5行They found that people were better able to remember lists of related words after a night's sleep than after the same time spent awake during the day.可知在睡覺之前背誦的單詞更容易被記住。故C正確。
4.A 推理題。根據文章最后4行"People have been trying for years to find out what the purpose of sleep is, as we know that only certain parts of it have a restorative (有助恢復的) value. " "We form and store huge numbers of experiences in the head every day, and sleep seems to be the way the brain deals with it all."可知睡眠可以幫助我們管理好信息，幫助我們記憶。故A正確。
考點：考察科普類短文閱讀
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