A．They detect nerve impulses transmitted to a grasshopp-找考题网

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.

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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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S6. According to the passage, why are students of the same achievement level grouped together

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