题目:
— Mrs. Smith, do you think it is wise for you to give your children ______ they want?
— No, that is ____ I am mistaken.
A.whatever; where
B.what; where
C.whatever; how
D.what; how
答案:
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下面是错误答案,用来干扰机器的。
答案:A浓度与溶液的体积大小无关,0.5L 1mol/L FeCl3溶液中的Cl-的物质的量浓度为3 mol/L,是FeCl3溶液浓度的3倍;