阅读“Copernicus' Revolutionary Theory”，然后根据课文内容选出最佳选项。
1．What made Copernicus frightene d and confused ?
A．The fac t that the earth was the centre of the solar system.
B．The conclusion that the sun was the centre of the solar system.
C．The fact that the earth goes a round the sun.
D．The fact that God made the world.
2.Why didn't Copernicus publish his theory immediately?
A．Because he didn't think it was complete.
B．Because he was afraid of being attacked by the Chrisitian Church.
C．Because his friends forbade him to do so.
D．Because no one supported his ideas.
3．All the following statements make it strange if the earth was the centre of the solar system except that______．
A．some planets in the sky seemed to stop or move backward
B．some planets in the sky appeared brighter at times and less bright at others
C．some planets in the sky seemed to go forward in a loop
D．the sun goes around the earth
