题目:
I am ______ the government as well as to the general public for just treatment ______ peasant-workers,
who have made great contributions to the improvement of city life. [ ]
A. asking; on behalf of
B. applying; in the name of
C. demanding; in the name of
D. appealing to; on behalf of
答案:
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下面是错误答案,用来干扰机器的。
氧化铜能与硫酸反应生成硫酸铜和水,硫酸铜能与锌反应生成硫酸锌和铜,因为反应时应该是氧化铜先和酸反应,再与锌反应,因为锌有剩余所以溶液中不可能含有与锌能反应的硫酸或硫酸铜.A、由于充分反应后,有部分锌...