英语单选30-32题号:30 题型:单选题 本题分数:2.00内容:Researchers have establish

英语单选30-32
题号:30 题型:单选题 本题分数:2.00
内容:
Researchers have established that when people are mentally engaged,biochemical changes occur in the brain that allow it to act more effectively in cognitive(认知的) areas such as attention and memory.This is true regardless of age.People will be alert(警觉的) and receptive (愿意接受的) if they are faced with information that gets them to think about things they are interested in.And someone with a history of doing more rather than less will go into old age more cognitively sound than someone who has not had an active mind.Many experts are so convinced of the benefits of challenging the brain that they are putting the theory to work in their own lives.“ The idea is not necessarily to learn to memorize enormous amounts of information,” says James Fozard,associate director of the National Institute on aging.“Most of us don’t need that kind of skill.Such specific training is of less interest than being able to maintain mental alertness.”Foard and others say they challenge their brains with different mental skills,both because they enjoy them and because they are sure that their range of activities will help the way their brains work.Gene Cohen,acting director of the same institute,suggests that people in their old age should engage in mental and physical activities individually as well as in groups.Cohen says that we are frequently advised to keep physically active as we age,but older people need to keep mentally active as well.Those who do are more likely to maintain their intellectual abilities and to be generally happier and better adjusted.“The point is ,you need to do both,” Cohen says,“Intellectual activity actually influences brain-cell health and size.” People who are cognitively healthy are those____.
选项:
a、who can remember large amounts of information
b、who are highly intelligent
c、whose minds are alert and receptive
d、who are good at recognizing different sounds
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题号:31 题型:单选题 本题分数:2.00
内容:
The findings of James and other scientists in their work____
选项:
a、remain a theory to be further proved
b、have been challenged by many other experts
c、have been generally accepted
d、are practiced by the researchers themselves
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题号:32 题型:单选题 本题分数:2.00
内容:
The subject of this passage can be ____.
选项:
a、important scientific principles
b、science and modern conveniences
c、science and civilization
d、discovery of scientific laws

1.C
A：The idea is not necessarily to learn to memorize enormous amounts of information文中很清楚的说不是了
B:文章未提及,不是
C:cognitive areas such as attention and memory.四项中只此项较合适
D：选这项的应该是看到了这句话And someone with a history of doing more rather than less will go into old age more cognitively sound than someone who has not had an active mind.此处的sound是adj.译为成熟老练,并不是n.声音
2.D
该题是细节题,十分容易,答案在这句中 Many experts are so convinced of the benefits of challenging the brain that they are putting the theory to work in their own lives.
‘they are putting the theory to work in their own lives.’即‘are practiced by the researchers themselves ’
3.A
此题是主旨题,比较难,用排除法
BC两项涉及modern conveniences 与civilization与题无关,排除
scientific principles 与scientific laws皆有科学规则,原理之意
所以主要着落在discovery上文章是在陈述研究结果,而不是探寻过程
文章首句采用完成句式Researchers have established that when people are mentally engaged,所以,也排除
仅仅发表个人观点,对错不负责任,如果LZ把答案发给我确认就好了（笑）