题目内容
阅读理解
If you want to stay young, sit down and have a good think. This is a research finding of a team of Japanese doctors, who say that most of our brains are not getting enough exercise—and as a result, we are growing old unnecessarily soon.
Professor Taiju Matsuzawa wanted to find out why quite healthy farmers in modern Japan appeared to be losing their ability to think and reason (推理) at a rather early age, and how the speed of getting old could be slowed down.
With a team of researchers in Tokyo National University, be set about measuring brain volumes (容量) of a thousand people of different ages with different jobs.
Computer technology helped the researchers to get most exact measurements of the volume of the front and side parts of the brain, which have something to do with intellect (智力) and feelings, and decide the human character. As we all know, the back part of the brain, which controls tasks like eating and breathing, does not contract (萎缩) with age.
Contraction of front and side parts—as cells (细胞) die off—was seen in some people in their thirties, but it was still not found in some sixty or seventy year olds.
The findings show that contraction of the brain begins sooner in people in the country than in the town. Those with least possibility, says Matsuzawa, are lawyers, followed by university professors and doctors. White collar workers doing the same work day after day in government offices are, however, as possible to have contracting brains as the farmer worker, bus drivers and shop assistants.
1.The team of doctors wanted to find out ________.
[ ]
A.at what point people grow mentally old
B.how to make people live longer
C.the size of certain people's brains
D.which people are the most clever
2.Their research findings are based on ________.
[ ]
A.an examination of farmers in northern Japan
B.tests given on a thousand old people
C.examine the brain volumes of different people
D.using computer technology
3.The doctor's tests show that ________.
[ ]
A.our brains contract as we grow older
B.our part of the brain does not contract
C.sixty-year-old people have better brains than thirty-year-old people
D.some people's brains have contracted earlier than other people's
4.According to the article, ________ are growing old earlier than people who live in the cities.
[ ]
5.The most possible conclusion of the passage is that ________.
[ ]
A.most of us should take more exercise
B.it's better to live in the town
C.the brain contracts if it is not used
D.the more one uses his brain, the sooner he becomes old
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