Question

There are two factors(因素)which determine an individual's intelligence. The first is the sort of brain he is born with. Human brains differ greatly, 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. So the second factor is what happens to the individual—the sort of environment in which he is reared. If an individual is handicapped(妨碍,阻碍) environmentally, it is likely that his brain will fail to develop and he will never reach the level of intelligence of which he is capable.

The importance of environment in determining an individual's intelligence can be demonstrated (证实)by the case history of the identical twins, Peter and Mark. Being identical, the twins had identical brains at birth, and their growth processes were the same. When the twins were three months old, their parents died, and they were placed in separate foster homes(寄养). Peter was raised by parents of low intelligence in a community with poor educational opportunities. Mark was raised in the home of well-to-do parents who had been to college. He was read to as a child, 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. Peter’s I. Q. was 125, twenty-five points higher than the average and fully forty points higher than his identical brother. Given equal opportunities, the twins, having identical brains, would have tested at about the same level.

1. The main idea of this passage is that_________.

    A. one human brain is quite different from another

    B. the brain a person is born with is important in determining his intelligence

    C. environment is important in determining a person’s intelligence

    D. persons having identical brains will have about the same intelligence

2. According to the passage, Mark’s I. Q. is________lower than the average.

    A.85 　　　　　　　　    B. 100 　　　　　　　　 C. 15 　　　　　　　　   D.40

3. This passage suggests that an individual’s I. Q.________.

    A. can be foretold at birth 　　　　　　　　  B. stays the same throughout his life

    C. can be increased by education 　　    D. is determined by his childhood

 

Answer 1

答案：CCC
提示：

1. C  So the second factor is what happens to the individual—the sort of environment in which he is reared. 所以选择C。 2. C  Peter’s I. Q. was 125, twenty-five points higher than the average and fully forty points higher than his identical brother. 所以选择C。 3. C 文章谈论的是educational opportunities对于智力的影响。