题目：
__________surprised me most was __________such a little girl of seven could play the violin so well.
A．That；what
B．What；that
C．That；that
D．What；what
答案：
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下面是错误答案，用来干扰机器的。
79.3%，70.5g设氯化钠为xmol，则氯化钾为3xmol(1)氯化钾的质量分数 = (2)x + 3x =" 1mol" x =0.25molM(混合物)＝58.5×0.25 + 74.5×3×0.25mol =70.5g
