一道语法

joywzy

A huge flying reptile that died out with the dinosaurs some 65 million years ago, the Q had a wingspan of 36 feet, believed to be the largest flying creature the world has ever seen. A,believed to be
B. and that is believed to be
C. and it is believed to have been
D.which was, it is believd
E.which is believed to be

不知答案是B还是C，为什么？谢谢。

mike1999

我觉得是C,因为B中用that做主语了.要改为it.

carefield

AGREE.

心静

我还想问一问：
that和 it的指代有什么区别？

mike1999

GMAT中一般不用that,this等词指代.

luoxiaoyang

我觉得此处C更能反映意思上的递进，而B用that好象带有从句的性质，因为一般不用that指代。