求助一道GMAT语法题~Astronmers at the Palomar Observatory have discovered a distant supernova explosion, one that they believe is a type previously unknown to science.(A) that they believe is(B) that they believe it to be (C) they believe that it is of (D) they believe that is (E) they believe to be of 这道题应如何分析,望高手相助~谢谢~
问题描述：
求助一道GMAT语法题~
Astronmers at the Palomar Observatory have discovered a distant supernova explosion, one that they believe is a type previously unknown to science.
(A) that they believe is
(B) that they believe it to be
(C) they believe that it is of
(D) they believe that is
(E) they believe to be of
这道题应如何分析,望高手相助~谢谢~
答
选E
首先 believe要用to be巨型
那么只有b和e
而b中的it多余了 因为that已经作了这个宾语