24. ______ the catastrophic flooding of New Orleans was caused not merely by a powerful storm but primarily by fatal engineering flaws in the city’s flood protection system has been proved by experts.
(A) This
(B) That
(C) While
(D) However
(E) Which

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統計： A(3), B(51), C(6), D(3), E(2) #939483

詳解 (共 1 筆)

#6275463

 “That” 可以用來引導名詞子句，並且作為整個句子的主語。


句子的主語是：“That the catastrophic flooding of New Orleans was caused not merely by a powerful storm but primarily by fatal engineering flaws in the city’s flood protection system”

 “has been proved by experts” 是主句的謂語部分。

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