Question

英语试题10

The chemical facts---as a by-product of their serach for gold became the basis for modem chemistry.

A that had been accumulated by alchemists
B were accumulated by alchemists
C alchemists accumulating them
D had been accumulated by alchemsits

为什么选A 不是 B C D 错在哪

Answer 1

这个句子的主干是facts became basis,选项处应填的是解释fact的同位语，或fact的定语从句。
A选项就是facts的同位语从句，
B选项和D选项里面有独自的谓语，又没有连接词，整个句子中就会有两个谓语了，所以错。
C选项的alchemists和前面连不起来，而且them 指代不明，也错，所以选A