What will the woman probably do on Thursday afternoon（）

A. He moved to other university.
B. He went to the laboratory.
C. He was knocked by a car.
D. He fell ill.

A. To show that twins have identical IQs.
B. To show how vital environment is in fostering one’s intelligence.
C. To show how critical human brains are in determining one’s intelligence.
D. To show that twins’ IQs are independent of the education they receive.