Passage Three Questions 17 to 20 are based on the passage you have just heard.

A．They graduated from the school for monkeys
B．They belong to some medical colleges.
C．They earn money for their own
D．They are hired by some farmers

A．Babies copy their facial features from their parents.
B．They always look at people around them.
C．Their facial features are formed after birth.
D．They have different facial features.