阅读理解。

     Are some people born clever and others born stupid? Or is intelligence (智力) developed by our

environment and our experience? Strangely enough, the answer to these questions is yes. To some

extent Our intelligence is given to US at birth, and no amount of education can make a genius (天才)

out of a child born with low intelligence. On the other hand, a child who lives in a boring environment

will develop his intelligence less than one who lives in rich and varied surrounding (环境). Thus the

limits of person' s intelligence are fixed at birth, whether or not he reaches those limits will depend on

his environment. This view, now held by most experts, can be supposed in a number of ways.

     It is easy to show that intelligence is to some extent something we are born with. The closer the

blood relationship between two people, the closer they are likely to be intelligent. Thus if we take two

unrelated people at random from population, it is likely that their degree of intelligence will be completely

different. If, on the other hand, we take two identical twins, they will very likely to be as intelligent as

each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and

this clearly suggests that intelligence depends on birth.

     Imagine now that we take two identical (完全相同的) twins and put them in different environments.

We might send one,for example,to a university and the other to a factory where the working is boring.

We would soon find differences in intelligence developing,and this shows that environment as well as

birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with

each other, but who are not related at all are likely to have similar degree of intelligence.

1. If a child is born with low intelligence, he can _____.

A. become a genius

B. not reach his intelligence in his life

C. reach his intelligence limits in rich surroundings

D. still become a genius if he should be given special education

2. In the second paragraph, the underlined sentence means "if we _____."

A. pick any two persons

B. take out two different persons

C. choose two persons who are relative

D. choose two persons with different intelligence

3. The example of the twins going to a university and to a factory separately shows _____.

A. the part that birth plays

B. the importance of their positions

C. the importance of their intelligence

D. the role of environment on intelligence

4. The best title of the passage can be _____.

A. Surroundings

C. Dependence on Environment

B. Intelligence

D. Effect of Education