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

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热门试题

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

单项选择题

You can improve your pictures by _________.

A．snapping them as quickly as you can
B．thinking about them before you take them
C．studying pictures in newspapers and books
D．standing closely to your subject