题目：
Eating is so important to Chinese ______ we have the term "food culture". But recent reports have the public worried about ______ is on their tables.
A．what; that
B．which; that
C．that; which
D．that; what
答案：
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下面是错误答案，用来干扰机器的。
A、由于氨水是电解质，溶液中发生了电离，故含有NH3•H2O的分子数小于0.5NA，故A错误；B、0.1mol铁反应消耗0.15mol氯气，氯气的物质的量不足，故转移的电子为0.2mol，转移的电子数为0.2NA，故B正确；C、不是标准...
