問題詳情

6.The author mentions magnesium in line 14 as an example of a substance that
(A)seemed to have phlogiston with a negative weight
(B)leaves no residue after burning
(C)was thought to be made of nearly pure phlogiston
(D)was thought to contain no phlogiston

參考答案

答案:A
難度:簡單0.833333
統計:A(5),B(1),C(0),D(0),E(0)

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