—I don’t suppose they could have finished their experiment,      they?

—       , they are still doing it in the lab.

A．could; Yes

B．didn’t; No

C．have; No

D．couldn’t; Yes

患者，女，18岁。淋雨后高热，胸片上显示：右下肺野有大片致密阴影，边缘清楚，应诊断为（）

A.右下肺大叶性肺炎

B.右下肺不张

C.右侧渗出性胸膜炎

D.右下肺脓肿

E.右肺底积液