the factory produces half a million pairs of shoes every year,80%_英语解答

the factory produces half a million pairs of shoes every year,80%--------are sold abroad.
A of which B of them
为啥不选B错哪儿了,还是两个都可以选?

人气：227 ℃　时间：2020-03-23 17:15:03

解答

A
这是定语从句,不是并列句.如果要选B,那么,就应该在80%前加上and,或者把逗号改成句号或分号,也就是说把后面的从句变成并列句!