They ____________ having an argument at seven o’clock last night when CCTV ______ to broadcast news．

A．were having；started                B．will be having；started 

青霉素过敏性休克抢救应首选（）

A.肾上腺素

B.去甲肾上腺素

C.抗组胺药

D.多巴胺

E.头孢氨苄