Passage Two Questions 30 to 32 are based on the passage you have just heard.

A．Children reared under average conditions possess average intelligence.
B．Lack of opportunity prevents the growth of intelligence.
C．An individual’s intelligence is determined chiefly by his environment.
D．Changes of environment produce changes in the brain structure.

A．Inviting foreign students to dinner.
B．Eating habits of foreign students.
C．Sharing a flat with foreign students.
D．Getting along with foreign students.