Question

If you want to stay young, sit down and have a good think. This is the 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 aging unnecessarily soon.
Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age, and how the process of aging could be slowed down.
With a team of colleagues at Tokyo National University, he set about measuring brain volumes of a thousand people of different ages and varying occupations.
Computer technology enabled the researchers to obtain precise measurements of the volume of the front and side sections of the brain, which relate to intellect (智能) and emotion, and determine the human character. (The rear section of the brain, which controls functions like eating and breathing, does not contract with age, and one can continue living without intellectual or emotional faculties.)
Contraction of front and side parts—as cells die off—was observed in some subjects in their thirties, but it was still not evident in some sixty- and seventy-year-olds.
Matsuzawa concluded from his tests that there is a simple remedy to the contraction normally associated with age—using the head.  The findings show in general terms that contraction of the brain begins sooner in people in the country than in the towns. Those least at risk, says Matsuzawa, are lawyers, followed by university professors and doctors. White collar workers doing routine work in government offices are, however, as likely to have shrinking brains as the farm worker, bus driver and shop assistant.    Matsuzawa’s findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need. “The best way to maintain good blood circulation is through using the brain,” he says, “Think hard and engage in conversation. Don’t rely on pocket calculators.”
【小題1】The team of doctors wanted to find out ________.
why certain people age sooner than others  
B. how to make people live longer
C. the size of certain people’s brains       
D. which people are most intelligent
【小題2】On what are their research findings based?
A survey of farmers in northern Japan.       
B. Tests performed on a thousand old people.
C. The study of brain volumes of different people 
D. The latest development of computer technology.
【小題3】The word “subjects” in Paragraph 5 means ________.
something to be considered                 
B. branches of knowledge studied
C. persons chosen to be studied in an experiment  
D. any member of a state except the supreme ruler.
【小題4】According to the passage, which people seem to age slower than the others?

A．Lawyers.	B．Farmers.
C．Clerks.	D．Shop assistants.

Answer 1

【小題1】A
【小題2】C
【小題3】C
【小題4】A

解析試題分析：想要保持年輕嗎？單從頭腦上來(lái)說(shuō)，越是樂于思考、使用大腦的人，越不容易腦衰老，日本學(xué)者的研究如是表示。律師這樣的職業(yè)，衰老的速度要小于別的行業(yè)。
【小題1】細(xì)節(jié)理解題。由第二段“Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age, and how the process of ageing could be slowed down.”可知醫(yī)生們想要研究出為什么一些人比其他人老得更快。故選A。
【小題2】細(xì)節(jié)理解題。由“he set about measuring brain volumes of a thousand people of different ages and varying occupations.”可知選C。
【小題3】詞義猜測(cè)題。由“……but it was still not evident in some sixty- and seventy-year-olds.”可知“subjects”指的是被選入實(shí)驗(yàn)中做研究的人。故選C。
【小題4】細(xì)節(jié)理解題。由“Those least at risk, says Matsuzawa, are lawyers,……”可知律師變老的風(fēng)險(xiǎn)最小。故選A。
考點(diǎn)：科普類閱讀。