供应横结肠的血液主要源于（） A．右结肠动脉 B．左结肠动脉 C．回结肠动脉 D．乙

-There_______ a show next weekend. Would you like to watch it?

-Of course, I'd love to.

A．is going to have

B．has

C．will be

D．will have

20.______ that caused him to serve dinner an hour later than usual.

A．It was we being late

B．It was our being late

C．It was we were too late

D．It was because we were late

早期胃癌根治术后哪种情况不必辅助化疗()

A．年龄＞60岁

B．癌灶面积＞5cm

C．年龄＜40岁

D．病理类型恶性程度高

E．多发性癌灶

在机械化抢险中，机械是基础，人机配合抢险是关键，人是决定性因素。

扫孔内岩芯或扩孔时，不得开车（），以防扭断钻杆或损坏钻头。

A.过慢

B.过猛

C.均速