单项选择,渴望有解释的回答
题目
单项选择,渴望有解释的回答
The medicine has many functions,__are unknown to us
A SOME OF WHICH
B that some of them
C of which some of them
d whcih of them
选哪个,别的为什么不行,这是关系从句吗?
答案
答案A.some of which
The medicine has many functions,(some of which) are unknown to us.
翻译：药有许多功能,鞭中一些我们尚未得而知.
改写
The medicine has many functions.Some of the functions are unknown to us.
some of which引导的是一个定语从句,修饰前面的functions
其他几个无论从语法还是意思上都不合理
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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