单项选择题

______is the center of our planetary system was a difficult concept to grasp in the Middle Ages.

A．It is the sun and not the earth
B．Being the sun and not the earth
C．The sun and not the earth
D．That the sun and not the earth
<上一题 目录 下一题>
热门 试题

单项选择题
These people once had fame and fortune; now______ is left to them is utter poverty.
A．all that
B．all what
C．all which
D．that all
单项选择题
Dorothy looked at the King when she heard this song and noticed that he seemed disturbed and ______ at ease.
A．ail
B．ill
C．illness
D．sick
相关试题