---- Jack, you ________ the window quickly, will you?

---- Ok! Oh! The window ________ broken.

A．are shutting; was

B．shut; is

C．have shut; has

D．will shut; has been

急性心肌梗死患者最早、最突出的症状是（）

A.心源性休克

B.室性期前收缩

C.心前区疼痛

D.呼吸困难

E.腹痛、腹泻