I would rather          at home than        football. It’s too hot outside.

A．stay; playing

B．stay; play

C．to stay; to play

D．to stay; playing

患者，男性，70岁，有长期便秘史，突然左下腹绞痛伴明显腹胀，未呕吐，未排气，查体可见全腹高度膨胀，左下腹可见巨大肠型，有轻度压痛、反跳痛，肠鸣音亢进。

在护理该患者时，最重要的观察内容是

A．腹痛
B．腹胀
C．肠绞窄征象
D．呕吐
E．排便