临床使用胎盘丙种球蛋白的副作用是()
A.容易引起超敏反应
B.抗病毒感染
C.容易引起肿瘤
D.容易造成病毒感染
E.容易引起自身免疫病
参考答案:D
There are _____ people in the street. What has happened? [ ]
A. very a few
B. very many
C. so many
D. so much
下列哪一项不是当归的功效()
A.补血
B.活血
C.调经
D.止痛
E.益精填髓