＿＿＿that we couldn’t catch up with him.

A．So fast he ran

B．So fast did he run

C．So fast ran he

D．Such fast did he run

小儿急性喉炎的临床表现可有

A．声嘶

B．犬吠样咳嗽

C．吸气性呼吸困难和喉喘鸣

D．三凹征阳性

E．发热、烦躁不安、无力、发绀等