下列属于广谱青霉素的是()
A.青霉酸
B.苯唑西林钠
C.头孢氨苄
D.阿莫西林钠
E.青霉素钠
参考答案:D
I just wonder ____ that makes him so excited.
A.why it does
B.what he does
C.how it is
D.what it is
关于急性坏死溃疡性龈炎临床特征性表现哪项是错误的()。
A.龈 * * 和边缘龈坏死
B.附着龈坏死
C.患处极易出血,疼痛明显
D.有特殊的腐败臭味
E.龈 * * 和边缘龈的创口呈一直线,如刀削状