题目:
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.
选项:
A、a cycle has begun in which personal computer users
B、a cycle for personal computer users has begun in which they
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 when they
答案:
A