单项选择题

Questions 14 ～ 17 are based on a talk by a speaker about butterflies. What is the purpose of the gay colors of a male butterfly

A．To frighten birds away.
B．To bring females to it.
C．To make it more difficult to see.
D．To protect the female.
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单项选择题
What did Mr. Smith think about his way to work
A．It is necessary for him to stay at home.
B．It is desirable for him to study on his way to work.
C．It is tedious for him to work in the office.
D．It is difficult for him to travel to work.
单项选择题
What did Sue experience in the bank
A．When she wanted to draw money, someone yelled.
B．When she was in the line, a man ran into the bank.
C．When she stood there, someone warned her.
D．When she waited to be served, a man robbed the bank.
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