The medicine has many functions,__are unknown to usA SOME OF WHICHB that some of themC of which some of themd whcih of them
问题描述：
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
答
A some of which引导的是一个定语从句
答
A
some of 一些
which指代前面的“The medicine” 并在后面引导了一个定语从句
答
A,some of whichThe medicine has many functions, some of which are unknown to us.医药功能很多,其中一些功能对我们来说是未知的.some of which引导定语从句some of which 等同 some of them因此,B多了thatC多了o...
答
B不需要逗号，C两个of不对，D语义不对，这药有许多功能，我们对这些功能一概不知。