Citing the recent increase in earnings by several computer companies, economists feel that a cycle has begun in which personal computer users, especially corporate consumers, are replacing their PC’s with more powerful models.
A.a cycle has begun in which personal computer users
B.a cycle for personal computer users has begun in whichthey
C.there is a cycle beginning for personal computer users
D.it is the beginning of a cycle for personal computer users
E.personal computer users are in the beginning of a cycle whenthey
没有什么规则什么动词优于名词,这都要试题目本身而定。你把它改成名词后 需要加了 it is,除了很繁琐外,最大问题在于it is the beginning of a cycle for personal computer users。这句话就已经完整了啊, 你在看后面are replacing their PC’s with more powerful models,明显还缺个主语啊,所以D肯定不对。再看A In which +完整的句子,personal computer users are replacing their PC’s with more powerful models,句子就完整了。作者: zyzrafa 时间: 2011-6-5 14:13
谢谢jameshzd!了解啦~