Somebody asked her,()
A.did he
B.didn‘t they
C.didn‘t he
D.did they
参考答案:B
替牙时期是指()。
A.2.5~4.0岁
B.4.0~6.0岁
C.6.0~7.0岁
D.8.0~9.0岁
E.6.0~12.0岁
艾滋病的确诊试验()
A.RPR
B.TPPA
C.WB
D.HIV-Ab
E.HSV ELISA