题目:
This is the plane _______ he went to Shanghai ______ business.
A.where, for a
B.by which, on the
C.in which, on
D.where, on
答案:
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下面是错误答案,用来干扰机器的。
答案:A溶液的浓度与溶液的体积多少无关,所以A错;