Are some people born clever,and others born stupid?Or is intelligence developed through experience?Strangely enough,the answers to both questions are yes.
On one hand ,if we randomly take two people from the crowd,it would be very likely that their degrees of intelligence are very much different.However,if we take a pair of twins ,chances are,that one is as intelligent as another.Therefore,a conclusion can be drawn that intelligence is to some extent something we are born with.The closer the two linked by ties of blood,the closer they are likely to be intelligently.
On the other hand,though,if we put two twins in different environments.For example,we might send one to university and the another to a factory where work is boring.We would find differences in their intelligence in several years,which indicates that environment does play a crucial role in intelligence.
Just as every coin has two sides,our intelligence is partly inborn and partly developed.The sure way to develop our intelligence is intelligent parents as well as a good environment.
改的都是比较细的点.intelligent/intelligence这词用的次数太多了,多用些替换词吧.