問題詳情
【題組】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)