单项选择题

The female mosquito bites because

A．she is unfriendly.
B．she needs blood to produce the young.
C．she is selective in food.
D．she can live longer with blood.

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单项选择题

What does the female mosquito use to test her victim's body and sweat

A．Her sensors.
B．Her antennae.
C．Her legs.
D．Her tip.

单项选择题

What is the author's attitude towards the existence of mosquitoes

A．Annoyed.
B．Worried.
C．Objective.
D．Disappointed.

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