具有感染性的HBV颗粒是（）.
A.Dane颗粒
B.小球形颗粒
C.管形颗粒
D.小球形颗粒和管形颗粒
参考答案：A
The shopkeeper did not want to sell for ________ he thought was not enough.
A．where
B．how
C．what
D．Which
薄荷与牛蒡子均能（）
A.疏散风热，透疹利咽
B.疏散风热，生津止渴
C.解肌退热，疏肝解郁
D.疏肝解郁，透疹利咽
E.清利头目，明目退翳
