問題詳情

47.Which two types of chemical reaction are described in the passage?
(A) Electrical and physical.
(B) Natural and man-made.
(C) Large and small.
(D) Common and rare.

參考答案

答案:B
難度:困難0.375
統計:A(0),B(3),C(3),D(2),E(0)

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