单项选择题

What people of old times actually saw in the night sky were __________.

A．some stars that look like certain things
B．clouds in a rainy day
C．stones hanging in space
D．shadows of the heavenly bodies
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单项选择题
The author suggests that all mosquitoes like __________.
A．blood
B．wet areas
C．cold weather
D．dry climates
单项选择题
The male mosquito __________ with his mouth.
A．can only drink plant juices
B．can get blood
C．can eat anything
D．Both A and B
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