Recent research indicates that two popular arthritis drugs are possibly not as safe as they initially believed.
(A) that two popular arthritis drugs are possibly not as safe as they initially believed
(B) that two popular arthritis drugs may not be as safe as they were initially believed to be
(C) two popular arthritis drugs to possibly not be as safe as it was initially believed
(D) the safety of two popular arthritis drugs may not be as great as it was initially believed
(E) the safety of two popular arthritis drugs not to be as great as they were initially believed to be
答案是B。
有个细节不太明白。prep笔记的解释说选项D的it没有指代对象,个人认为可以指代the safety,不知道对不对,请大家帮忙~~~ |