阻塞性黄疸时，重氮反应为（）

A.直接反应阴性

B.直接反应阳性

C.直接反应阴性，间接反应强阳性

D.双相反应阴性

E.双相反应阳性

In spoken English of some areas in the US, the "r" sounds at the end of the words().

A. are dropped

B. drop

C. are being dropped

D. have dropped