应用超声羊水指数诊断羊水过少的标准是（）
A.3cm
B.5cm
C.8cm
D.10cm
E.12cm
参考答案：C
He has so _____ money that he can't afford the book. [ ]
A. a few
B. few
C. a little
D. little
经过多次谈判借款人明显没有还款意愿分类时应划为：（）
A.正常类
B.关注类
C.次级类
D.可疑类
