What makes one person more intelligent than another What makes one person a genius, like the brilliant Albert Einstein, and another person a fool Are people born intelligent or stupid, or is intelligence the result of where and how you live 16
We know, however, that just being born with a good mind is not enough. In some ways, the mind is like a leg or an arm muscle. 17 Mental exercise is particularly important for young children. Many child psychologists think that parents should play with their children more often and give them problems to think about. 18 If, on the other hand, children are left alone a great deal with nothing to do, they are more likely to become dull and unintelligent.
19 According to some psychologists, if parents are always telling a child that he or she is a fool or an idiot, then the child is more likely to keep doing silly and foolish things. So it is probably better for parents to say very positive things to their children, such as “That was a very clever thing you did.” or “ 20 ”

A. A healthy body contributes to one's intelligence.
B. Parents should also be careful about what they say to young children.
C. What people want to express is like this.
D. The children are then more likely to grow up bright and intelligent.
E. It needs exercise.
F. You are such a smart child.
G. These are very old questions and the answers to them are still not clear. 16．G 17．E 18．D 19．B 20．F
16．根据前面的几个问题可知G符合要求。
17．根据前面的the mind is like a leg or an arm muscle.肌肉需要锻炼.可知E正确。
18．根据前面的give them problems to think about可知要提出问题让孩子回答，孩子才更有可能聪明。可知D正确
19．根据本段内容可知父母要注意孩子所说内容，故选B
20．根据前面的That was a very clever thing you did.可知下面这一句应该是和它相似的一句表示鼓励的话。故选F