What is this text mainly about?A.The life of people with I. Q. 's below 90.B.The life of p
What is this text mainly about?
A.The life of people with I. Q. 's below 90.
B.The life of people with the highest I. Q.
C.The reason why people have different I. Q. levels.
D.People with different I. Q. levels and the confliction among them.