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(fù)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."
小題1:The phrase" to sleep on a problem" in Paragraph 1 most likely means to______.
A．pay full attention to a problemB．wait until later for a decision
C．sleep to forget a problemD．have difficulty sleeping
小題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
小題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
小題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

小題1:B
小題2:B
小題3:C
小題4:A

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。
小題1:.B 推理題。根據(jù)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。
小題2:B 推理題。根據(jù)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(lián)系。研究學(xué)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。
小題3:C 細(xì)節(jié)題。根據(jù)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。
小題4:A 推理題。根據(jù)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(fù)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。
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科目：高中英語 來源：不詳 題型：閱讀理解

WELLINGTON, September 19 (Xinhua) -- If your teenage son won't get out of bed in the morning, then take comfort from the fact that he might be sleeping his way to a healthier future, according to a new research from New Zealand.
Researchers in human nutrition at the University of Otago have found that teenage boys who sleep less have more body fat when compared to girls, for whom lack of sleep has no noticeable effect on their body fat ratios.
The study of 386 boys and 299 girls aged 15 to 18 found that average-sized 16-year-old boy weighing 69.5 kg and 176 cm tall, who slept for eight hours a day, had a waist size l.8 cm bigger and l.6 kg, or 9 percent, more body fat than the average-sized boy who slept 10 hours a day.
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The researchers ruled out the effects of food choice and number of screens, such as televisions, games and consoles, which the teenagers had in their bedrooms.
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A．Boys and girls.B．Food and weight. C．Sleep and health. D．Screens and fat.
小題2:What's the result of less sleep for teenage boys?
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B．An increase in weight and height.
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D．A decrease in bone and muscle.
小題3:From the sixth paragraph we can infer that ______.
A．girls usually sleep less and have healthier lifestyles than boys
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B. Why it is fun to teach a child reading
C. What if a child has reading problems
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小題2:               
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小題3:               
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Scott wants Wal-Mart to do its part too．He has promised to cut the existing greenhouse-gas emissions （排放） over the next few years and promised to construct new stores that are more efficient．He wants Wal-Mart's fleet (車隊) of more than 7, 000 trucks to get twice as many miles per gallon by 2015．Factories that show Wal-Mart they're cutting air pollution will get preferential treatment in the supply chain. Wal-Mart says it's working with consumer-product manufacturers to  reduce their packaging and will reward them if they do so．
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Like Bill Gates, who started his charitable foundation, Scott happens to be promoting Wal-Mart's image at a time when his company's reputation is declining．He acknowledges that he launched the plan partly to shield （保護(hù)，庇護(hù)） Wal-Mart from bad press about its contribution to global warming．" By doing what we're doing today, we avoid the headline risks that are going to come for people who did not do anything," he says．"At some point businesses will be held responsible for the actions they take．" Meanwhile, should Wal-Mart succeed at shrinking its environmental footprint and lowering prices for green products, both the planet and the company will profit．
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B．Wal-Mart's green activity is just window dressing．
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D．Wal-Mart doesn't have any social responsibility at all．
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D．Demand the fleet of trucks to use more fuel than before．
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B．Stress the purpose of Wal-Mart's green plan．
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D．Analyze the similarity between Bill Gates and Scott.

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科目：高中英語 來源：不詳 題型：閱讀理解

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Plastic is a single word, but plastic isn’t just one thing. What all plastics share in common are plasticizers -- special chemicals that allow the material to be changed into nearly any shape or texture. Plasticizers (塑化劑) are added to plastic during the manufacturing process.
Phthalates and BPA are two types of plasticizers that work in different ways. Phthalates add softness to things like shampoo bottles, raincoats and rubber. They are also used in perfumes and makeup. BPA, on the other hand, gives a hard, clear, almost glasslike feel to products such as infant bottles. BPA also appears in food and soda cans, DVDs and other unexpected places.
How do these chemicals get into us? When plastic is heated in the microwave or dishwasher, chewed on or scratched, the chemicals can seep (滲透) out of the plastic. Even though we can’t see them, we eat them, drink them and breathe them in.
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C．Its importance and chemicals.D．Its popularity and advantages.
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C．A baby milk bottle.D．A new perfume.
小題3:Phthalates and BPA can get into us __________.
A．through mouth or noseB．through blood transfusion
C．by feeling plastic productsD．by heating in the microwave
小題4: What is the passage mainly about?
A．A new ban on plastic products.B．Problems caused by the plastic.
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