Directions:Please match each word in the left column with the corresponding explanation in the right one.
oblige
A. to look with the eyes partly open
B. to make it necessary for you to do sth
C. having a lack of respect for certain organization, beliefs, customs
D. to shine brightly
E. to conquer
F. unsuitable
G. to do sth for sb as a favor or small service
H. heavier, larger on one since than on the other
I. extremely enthusiastic
J. nearest in time, order, etc
The best statement of the main idea of this passage is that _____.
A. human brains differ considerably
B. the brain a person is born with is important in determining his intelligence
C. environment is crucial in determining a person‘s intelligence
D. persons having identical brains will have roughly the same intelligence