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  3. There are two factors which determine an individual’s intelligence. The firs

There are two factors which determine an individual’s intelligence. The firs

游客2023-07-24  65
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【B1】______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 be has【B2】______to learn. So the second factor is what【B3】______to the individual--the sort of environment in which he is reared. If an individual is hindered environmentally, it is【B4】______that his brain will fail to develop and he will never【B5】______the level of intelligence of which he is capable.
    The【B6】______of environment in determining an individual’s intelligence can be【B7】______by the case of the history of the identical twins, Peter and Mark. Being identical, the twins had identical brains at birth, and their growth【B8】______were the same. When the twins were three months old, their parents died, and they were placed in separate foster(收养的)homes.【B9】______.Mark was reared in the home of wealthy parents
    who had been to college.【B10】______.This environmental difference continued until the twins were teenagers, when they were given tests to measure their intelligence. Mark’s I.Q. was 125,【B11】______. [br] 【B9】
选项
答案 Peter was reared by parents of low intelligence in an isolated community with poor educational opportunities
解析 此句是描述Peter的成长环境，和下一句Mark的成长环境形成鲜明的对比，句子结构比较简单，不建议改写，reared,parents,intelligence在文中都有出现，照抄下来即可。
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