单项选择题

Passage One Questions 11 to 13 are based on the passage you have just heard.

A．It is compared with an operating room light.
B．It is compared with a game.
C．it is compared with a brain-drain machine.
D．It is compared with a stimulation drug.
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单项选择题
A．They detect nerve impulses transmitted to a grasshopper’s legs.B．They sense how far a grasshopper has jumped.C．They detect changes in air pressure.D．They help a grasshopper find food.
A．They detect nerve impulses transmitted to a grasshopper’s legs.
B．They sense how far a grasshopper has jumped.
C．They detect changes in air pressure.
D．They help a grasshopper find food.
单项选择题
A．The professor is old.B．The professor is lazy.C．The professor is sick.D．The professor is only tired.
A．The professor is old.
B．The professor is lazy.
C．The professor is sick.
D．The professor is only tired.
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