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It is said that many brain training prod...

    It is said that many brain training products is able to keep us mentally fit. Some products even claim that brain training can prevent dementia (痴呆) in old age. Many such products are only money-making rubbish. Also, there is no scientific proof that games or other brain exercises can have this effect. That is what the German Institute for Quality and Efficiency in Health Care (IQWiG) pointed out.

As we get older, our thinking gets slower and it is harder for us to learn new things. Many people try to stay mentally fit by, for example, learning a new language or doing crossword puzzles. Computer games that aim to keep the brain active are also becoming increasingly popular. “Doing exercises like trying to find symbols on a computer screen as fast as possible can actually improve your reaction time,” explains Professor Peter Sawicki, the Institute’s Director. “But scientific studies have shown that brain training only leads to an improvement in one aspect that it is aimed at. So if you learn to find symbols quickly, it does not mean that you will be able to improve your memory.”

Research has not shown that brain training can keep up or enhance (加强) people’s overall (全面的) mental abilities as commonly thought. “So there is no need to feel bad if you do not enjoy brain training: there are no health reasons for doing it,” says Sawicki. “But if you think brain training exercises are interesting, you can try out different things. For example, completing the order of letters can improve your logic skills. And practicing word association techniques can help you to remember things better. You can do all of these things at home on your own.”

1.What can we learn about the brain training products according to the passage?

A.They are expensive. B.They are effective.

C.They are harmful to the brain. D.They are unreliable

2.According to Peter Sawicki, brain training exercises can________.

A.only improve a certain ability of people

B.help all people improve their memory

C.keep the brain active for a longer time

D.only improve your reaction time

3.The last paragraph shows that brain training exercises should be done_______.

A.when you can’t learn new things B.in a relaxing way

C.under strict instructions D.when your thinking gets much slower

4.On the whole, researchers think that brain training exercises_______.

A.aren’t as effective as commonly thought

B.are just designed for young people to have fun

C.may benefit people in some indirect ways

D.shouldn’t be encouraged

 

1.D 2.A 3.B 4.A 【解析】 这是一篇说明文。文章主要讲述研究发现大脑训练并不会像人们认为的那样提高人的大脑能力。 1.细节理解题。根据第一段的Many such products are only money-making rubbish. Also, there is no scientific proof that games or other brain exercises can have this effect.(很多这样的产品都是只为了赚钱的垃圾。而且,没有可以科学证据可以证明这些游戏或大脑锻炼有这种功效)可知,本文作者认为大脑训练产品是不可靠的,因为没有科学证据证明它们有用。D. They are unreliable(它们不可靠)符合以上说法,故选D项。 2.细节理解题。根据第二段的But scientific studies have shown that brain training only leads to an improvement in one aspect that it is aimed at. So if you learn to find symbols quickly, it does not mean that you will be able to improve your memory.(但研究表明大脑训练只能使其所针对的一个方面得到改善,所以,如果你学会了快速寻找图像,这并不意味着你就能提高你的记忆能力)可知,Peter Sawicki认为大脑训练只能改善人的某一项能力。A. only improve a certain ability of people(只能改善人的某一项能力)符合以上说法,故选A项。 3.推理判断题。根据文章最后一段的“So there is no need to feel bad if you do not enjoy brain training: there are no health reasons for doing it,” says Sawicki. “But if you think brain training exercises are interesting, you can try out different things.” (Sawicki说:“所以,如果你不喜欢大脑训练,也没有必要感觉糟糕:这样做没有任何健康方面的理由。”“但如果你认为大脑训练很有趣,你可以尝试不同的东西。”)可推测,Sawicki认为做大脑训练时应该放松,不要想太多,如果觉得有趣就做,如果觉得不喜欢就不做。B. in a relaxing way(用放松的方式)符合以上推测,故选B项。 4.细节理解题。根据最后一段的Research has not shown that brain training can keep up or enhance (加强) people’s overall (全面的) mental abilities as commonly thought.(研究还没有表明大脑训练可以像通常认为的那样保持或加强人们的整体智力)可知,研究人员认为大脑训练没有人们通常认为的那样有效。A. aren’t as effective as commonly thought(不是像通常认为的那样有效)符合以上说法,故选A项。
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In nutrition (营养) it was all good news too. This nice tasting pineapple contained four times more vitamin C than the old green variety. Nutritionists said that it was not only full of vitamins, but also good against some diseases. People were eager to be able to buy this wonderful fruit. The new type of pineapple was selling fast, and the Del Monte Gold pineapple rapidly became a fixture in the shopping basket of the healthy eater.

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C.a little soft outside and sweet inside D.yellowy-gold outside and hard inside

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