－I'm afraid that I couldn't pass the examination.

－As a student，you need to believe in yourself________you have the ability to achieve any________goal.

A．knowing；to be set

B．knowing；set

C．known；setting

D．known；to be set

下列情况应及早行胃镜检查，但不包括 （）

A.50岁男性，近期出现消化不良、呕吐、黑便

B.慢性胃炎

C.良性溃疡伴有胃酸缺乏

D.X线钡餐提示溃疡较大

E.胃切除术后10年以上