— Where you from? — I am from China.[ ]
A. do
B. does
C. are
D. is
答案:C
羊水过多的诊断标准为()
A.800ml
B.1000ml
C.1500ml
D.2000ml
E.2500ml
QC小组是全面质量管理活动中()的组成部分。