单项选择题

The speed of radio signals is （） a spaceship.

A．a little greater than
B．as great as
C．much greater than
D．less than

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热门试题

单项选择题

When you look into a telescope, things look （）

A．longer and larger
B．longer and nearer
C．smaller and farther
D．smaller and nearer

单项选择题

Are there living things in space （）.

A．We have already got an answer to this question
B．We will never get an answer to this question
C．We got an answer to this question long ago
D．We may get an answer to this question in the next few years