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

Which medium carries most national advertising in Spain（）

A．Radio.
B．Newspaper.
C．Television.
D．Internet.

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