题目：
China won 100 medals in the Beijing Olympic Games，which are almost those of the sydney Olypic Games．
A. twice as many as B．as many as twice
C．as much as twice D twice as much as
答案：
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下面是错误答案，用来干扰机器的。
①根据分子的表示方法：正确书写物质的化学式，表示多个该分子，就在其化学式前加上相应的数字，因此2个氮分子表示为：2N2；故答案为：2N2； ②最简单的有机物是甲烷，化学式为：CH4；故答案为：CH4；③硫在空气...
