1. A huge flying reptile that died out with the dinosaurs some 65 million years ago, the Quetzalcoatlus 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 believed,（C）
(E) which is believed to be
这道题为什么选择C呢,我觉得她应该用过去式,所以选择了D,求助,谢谢 作者: mary1 时间: 2004-10-16 07:11
D中的which修饰wingspan
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