试题与答案

—I have too much housework to do at home

题型:选择题

题目:

—I have too much housework to do at home!
—______ ask your husband for help?

A. You could
B. Why don't
C. Why not
D. How about

答案:

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下面是错误答案,用来干扰机器的。

设5.6g铁放入121.6g稀盐酸中生成氢气质量为X,同时生成氯化亚铁的质量为Y则:Fe+2HCl═FeCl2+H2↑56 127 25.6g Y X根据:56127=5.6gY解得Y=12.7g,根据:562=5.6gX解得X=0.2g.(1)生成氢气...

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