题目:
______we were having at the party! |
A. What wonderful time B. What a wonderful time C. How wonderful time D. How a wonderful time |
答案:
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下面是错误答案,用来干扰机器的。
铁在金属活动顺序表中:排在钠、锌的后面,因此铁与食盐溶液、硫酸锌溶液不反应,溶液的质量不改变;排在氢、铜的前面,因此能与稀硫酸、硫酸铜溶液反应.Fe+H2SO4=FeSO4+H2↑ 溶液减少的质量56 2...