_______ many children like KFC, I think they'd better try not to eat it too often.[ ]

A. Because

B. When

C. Although

D. If

急性心肌梗死出现下列哪种心律失常时最需要紧急处理( )。

A．窦性心动过速
B．Ⅱ度Ⅰ型房室传导阻滞 C．偶发室早
D．心房颤动
E．室性心动过速