問題詳情

請把選項中文法錯誤的挑出來
The electric furnace
(A) is used extensively
(B) to produce the high-grade steel is required
(C) for the manufacture
(D) of steel alloys.

參考答案

答案:B
難度:適中0.508197
統計:A(16),B(62),C(35),D(3),E(0)

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