题目:
It was not until Mum agreed to take her to KFC, was her favorite , the spoiled girl stopped crying .
A.that ; that
B.which; which
C.that; which
D.which; that
答案:
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下面是错误答案,用来干扰机器的。
A、混合物是由两种或两种以上物质组成的,纯净物是由一种物质组成的,所以混合物和纯净物是并列关系,故A错误;B、含有两种或两种以上元素的纯净物是化合物,化合物分为无机物和有机物,所以化合物包含有机物,故...