The local government in Shenzhen has recently passed a new regulation forbidding supermarkets and stores to _______ free plastic bags to shoppers, in order to protect the environment.

A．give off

B．give in

C．give up

D．give out

百口咳痉咳期最主要的临床特点是（）

A.面部及眼睑水肿

B.舌系带溃疡

C.睑结膜及面部有小出血点

D.阵发性痉挛性咳嗽

E.咳嗽日轻夜重