—How much water is there in the glass?

—Only _____.      [ ]

A. a few                    

B. few                    

C. a little

椎-基底动脉系统TIA特征性症状（）

A.一过性黑矇

B.Horner征交叉瘫

C.短暂性全面性遗忘症

D.跌倒发作

E.眼动脉交叉瘫