There are rules that restrict the kinds of jobs that foreign students can have      studying in the

United States. [ ]

A.because

B.until

C.since

D.while

以下哪一项是进行业务流程重组的第一步（）。

A.定义要审查的范围

B.开发项目计划

C.理解审查的流程

D.重组和梳理要审查的流程