The manager was very angry ,for he had sent his business partner two thousand machines yesterday ,ha
题目
The manager was very angry ,for he had sent his business partner two thousand machines yesterday ,half of ( )unqualified .
答案是them 为什么不能是which
答案
unqualified是后置定语,用which 后面至少是个句子
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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