— What can you see _____ the picture?    

— I can see a boy.    

— Where is the boy?    

— He is _____ the chair. [ ]

A. in; in

B. on; on

C. in; on

D. on; in

关于“早期胃癌”概念，正确的是（）

A.肿瘤范围小于1cm

B.肿瘤局限于黏膜和黏膜下层

C.肿瘤位于胃小弯近胃角处

D.无远处淋巴结转移

E.肿瘤表面光整