问题补充:
单选题Thefactoryproducedmanykindsofbikes,noneof_____shippedtoforeigncountries.A.themB.whichC.thatD.what
答案:
A解析考查独立主格结构。两部分之间没有连接词,说明逗号后面的部分不是句子,是短语。是独立主格结构。独立主格结构none of them shipped to foreign=none of which was shipped to foreign countries.故A正确。