金黄色葡萄球菌产生（）

A.痉挛毒素

B.表皮剥脱毒素

C.毒素休克综合征毒素

D.红疹毒素

E.肉毒毒素

—Another cup of coffee? That’s your third since lunch.

—Yeah, well, I ____ all night preparing for my history exam. I can hardly keep my eyes open.

A．stayed up

B．have stayed up

C．have been staying up

D．will stay up