引起成年人急性黄疸型肝炎最主要的病原为
A.HAV
B.HBV
C.HCV
D.HDV
E.HEV
参考答案:E
The manager gave one of the salesgirls an accusing look for her ______ attitude toward ______ customers.
A. straightforward B. partial C. favourable D. hostile