理想的冠桩直径应为根径的
A.1/5
B.1/4
C.2/3
D.1/2
E.1/3
参考答案:E
We don’t think the experiment is ______ failure. At least we have gained ______ experience for future success.
A.the; a
B.a; /
C.a; an
D.the; the
患儿,女,3岁,发热、声嘶伴犬吠样咳嗽2天。
诊断明确后,应采用以下何种治疗为宜()
A.退烧
B.喹诺酮类抗生素+激素
C.头孢菌素类抗生素+激素
D.仅用激素
E.环甲膜穿刺
F.雾化吸入
G.祛痰、镇咳