問題詳情
【題組】50. What could be the best title for this article?
(A) How to Prevent Dust Explosions
(B) Dust Explosions—the Basics
(C) What We Have Learned from Dust Explosions
(D) A Tragic Incident Caused by Dust Explosions
參考答案
答案：B
難度：適中0.478261
統計：A(2),B(11),C(7),D(3),E(0)
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