单项选择题

A．To correct a common misunderstanding about grasshoppers.
B．To help explain how well grasshoppers can jump.
C．To compare the size of grasshopper with that of other insects.
D．To show how quickly grasshoppers respond to danger.
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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.
单项选择题
A．Government of every nation with a small population.B．Government of every country with a large population.C．Government of a developed country.D．Government of a developing country.
A．Government of every nation with a small population.
B．Government of every country with a large population.
C．Government of a developed country.
D．Government of a developing country.
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