题目

一道SAT语法improving sentences的题
Remarkable breakthroughs in gene research may lead to dramatic changes in medical (treatment,where it may be possible to create drugs tailored to a patient's genetic makeup.)
(A)~
(B)treatment,in which they can possibly create
(C)treatment by making it possible to creat
(D)treatment that makes it possible to create
(E)treatment taht makes possible creating
答案选的C,我选的B.我不知道C中it指代什么成分,而且感觉B没有错误.

提问时间：2021-04-05

答案

你选的B,里面的they才是指代不明啊,前面有出现任何复数人群?C里面的it 是倒装的形式语,就好像it is difficult to do sth一样,只不过一个是形式主语,一个是宾语而已,真要指代的话就是指toxxx那些内容,