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106指考英文考科-17


<題組題>[題組:第16題到第20題]Enzymes consist of various types of proteins that work to drive the chemical reactions ______ for certain types of nutrients to take effect.
(A) requires
(B) required
(C) requiring
(D) to require

答案

答案:(B)。略解:reactions與require是被動關係,“被需要的化學反應”用過去分詞required作定語;requires(動詞第三人稱單數)、requiring(現在分詞,主動)、to require(不定式)不契合 報錯
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