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单项选择题


Questions 32 to 35 are based on the passage you have just heard.

A．Only humans respond to emotions by shedding tears.
B．Only humans shed tears to get rid of irritating stuff in their eyes.
C．Only human tears can resist invading bacteria.
D．Only human tears can discharge certain chemicals.
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单项选择题We can learn from the first paragraph that laughter ______ .

A．can resolve people’s opposition to each other
B．is a universal feature shared by human beings
C．plays a biological role unlike other bodily process
D．has nothing to do with people’s sense of humor

单项选择题A．Late in the morning.B．Early in the afternoon.C．Sometime before dawn.D．Shortly after sunrise.

A．Late in the morning.
B．Early in the afternoon.
C．Sometime before dawn.
D．Shortly after sunrise.

单项选择题A．Pollution of the environment.B．A new generation of pest killers.C．Over-killing by hunters.D．Destruction of their natural homes.

A．Pollution of the environment.
B．A new generation of pest killers.
C．Over-killing by hunters.
D．Destruction of their natural homes.

单项选择题A．Only one out of four girls cries less often than boys.B．Of four boys, only one cries very often.C．Girls cry four times as often as boys.D．Only one out of four babies doesn’t cry often.

A．Only one out of four girls cries less often than boys.
B．Of four boys, only one cries very often.
C．Girls cry four times as often as boys.
D．Only one out of four babies doesn’t cry often.

单项选择题A．The son.B．The father.C．The mother.D．Aunt Louise.

A．The son.
B．The father.
C．The mother.
D．Aunt Louise.