易透过血脑屏障的药物是()
A.庆大霉素
B.异烟肼
C.链霉素
D.阿米卡星
E.司帕沙星
参考答案:B
儿童品行障碍主要分为( )种类型。
A.2 B.3 C.4 D.5
---- Have you heard of the North Korea’s nuclear test ?
---- Yes, _____ news came as _____ shock to me.
A.the; a
B.the; the
C.a; a
D.a; the