单项选择题

Scientists can see farther out into space with the help of __________.

A．the light from space
B．the stars in space
C．some new and larger telescopes
D．the clear background
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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
单项选择题
The author suggests that all mosquitoes like __________.
A．blood
B．wet areas
C．cold weather
D．dry climates
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