—______ the keys?

－______ on the bed. [ ]

A. Where is; It's

B. Where are; They're

C. Where's; They're

关于消化性溃疡下述哪些情况为手术适应证（）

A.上消化道出血

B.反复发作的十二指肠球溃疡

C.胃溃疡疑癌变

D.并幽门不全梗阻

E.复合溃疡