Question

It would seem to be a general truth__________ nothing is as straightforward as it at first seems.

A．that

B．when

C．what

D．if

Answer 1

A

試題分析：句意：沒有什么起初似乎是簡單易懂，這似乎是一個一般的真理。It是形式主語，nothing is as straightforward as it at first seems是真正的主語從句，其中nothing是主語，as straightforward as it at first seems是表語。這個主語從句主語，表語齊全，故用that。that只引導名詞性從句，不做句子的成分。When表示時間，在句中作狀語。what 充當名詞性從句的主語，賓語和表語。If 表示是否。故選A。