聽短文，選擇正確答案．
（1）What did scientists know about the moon a long time ago？
A．Nothing．
B．Many things．
C．Everything．
（2）Which planet did the scientists know a lot？
A．The moon．
B．The sun．
C．The mars．
（3）Why can't a plane fly to the moon？
A．Because it is 240 kilometers away．
B．Because we don't know where it is．
C．Because it can't fly without air．
（4）Where have rockets with men reached？
A．The sun．
B．The moon．
C．All the stars．
（5）Which of the following sentences is TRUE？
A．So far， rockets with men have been to some other places．
B．Rockets with men can fly to other places farther than the moon．
C．Perhaps one day rockets will be able to go to any place in space．