患儿,2岁。麻疹高热4天,皮肤疹点密集成片,色紫红,遍及周身,神昏,抽搐3次。治疗应首选()
A.清金化痰汤
B.清解透表汤
C.羚角钩藤汤
D.天麻钩藤饮
E.银翘散
参考答案:C
We _______ talk loudly when we see the sign "Be quiet" on the wall. [ ]
A. must
B. mustn't
C. need
D. needn't
牙髓塑化治疗时,拔髓的要求为
A.穿刺出根尖孔B.尽量拔除牙髓C.可以不拔除牙髓D.保留根尖1/3处牙髓E.保留根尖1/2处牙髓