Jack always sleeps late on Sundays. I am sure he _______ when we get home.

A．is still sleeping

B．is to be sleeping

C．will still be sleeping

D．will have been sleeping

肠梗阻患者X线检查显示气液平面的最早时间是（）

A.腹痛时

B.梗阻后3～6小时

C.发现明显腹胀后

D.发生第一次呕吐后

E.发病后12小时