下列预防措施属于被动免疫的是
A.口服小儿灰质炎疫苗
B.注射卡介苗
C.注射丙种球蛋白
D.注射麻疹疫苗
E.注射流脑疫苗
参考答案:C
Our school is famous _____________ its sports. [ ]
A. on
B. in
C. for
D. of
听力正常人瞬态诱发性耳声发射引出率为:()
A.60%~70%
B.70%~80%
C.80%~90%
D.90%~100%
E.以上都不是