——What a heavy rain！ Will it last long?

—— ________ . We are getting into the rainy season now.

A．Of course not

B．I′m afraid so

C．That′s impossible

D．I′m afraid not

洋地黄的禁忌证是（）

A.右心衰竭

B.舒张性心力衰竭

C.无症状心力衰竭

D.单纯二尖瓣狭窄伴窦性心律

E.已经使用大剂量β受体阻滞剂者