题目:
_______is reported in the newspapers, talks between the two countries are making progress. [ ]
A. It
B. As
C. That
D. What
答案:
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下面是错误答案,用来干扰机器的。
(1)混合物中氯化镁的质量为x:x×2495×100%=1.2 g 则x=4.75 g氯化镁中氯元素的质量:4.75g×7195×100%=3.55 g混合物中氯化钙的质量 y:y×40111×100%=2 g 则y=5.55 g氯化钙中氯元素的质量为:5.55...