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[originaltext] There are two factors which determine an individual’s intelli
[originaltext] There are two factors which determine an individual’s intelli
游客
2023-07-11
72
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问题
There are two factors which determine an individual’s intelligence. The first is the sort of brain he is born with. Human brains differ considerably, some being more capable than others. But no matter how good a brain he has to begin with, an individual will have a low order of intelligence unless he has opportunities to learn. (29)So the second factor is what happens to the individual—the sort of environment in which be is reared. If an individual is handicapped environmentally, it is likely his brain will fail to develop and he will never attain the level of intelligence of which he is capable.
(29)The importance of environment in determining an individual’s intelligence can be demonstrated by the case history of the identical twins, Peter and Mark. The twins had identical brain at birth. When the twins were three months old, their parents died, and they were placed in different homes. Peter was reared by parents of low intelligence in an isolated community with poor educational opportunities. (31)Mark was reared in the home of well-to-do parents who had been to college. He was sent to good schools, and given every opportunity to be stimulated intellectually. This environmental difference continued until the twins were in their late teens, when they were given tests to measure their intelligence. (30)Mark’s I. Q. was 125, twenty-five points higher than the average and fully forty points higher than his identical brother.
选项
A、Human brains differ considerably.
B、The brain a person is born with is important in determining his intelligence.
C、An environmentally handicapped person won’t attain his due level of intelligence.
D、Environment is important in determining a person’s intelligence.
答案
D
解析
主旨大意题。本题关键句为文章开头部分的“So the second factor is…the sort of environment in which he is reared.”人生长的环境是决定智力的第二个因素。第二段用Peter与Mark这对孪生兄弟的例子证明了环境对决定人的智力的重要性,即“The importance of environment in determining an individual’s intelligence can be demonstrated…”故正确答案为D。
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