单项选择题

The best topic for the passage is "_________".

A．What Is a Telescope
B．The History of Telescopes
C．How a Telescope Works
D．How Far a Telescope Can Reach
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单项选择题
With the help of telescopes, scientists can _________.
A．discover all stars and planets in the universe
B．gain more knowledge about the universe
C．study the craters, mountains and plains on the moon's surface
D．increase our knowledge of the earth
单项选择题
This passage gives us some
A．reasons for taking good pictures
B．ideas of some funny hobbies
C．advice on taking good pictures
D．difference of the pictures taken outdoors and indoors
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