A: Jane, you look so worried. 小题1: _____________________________________?

B: I lost a book about computer science.

A: Is it the one you borrowed from the city library?

B: Yes, it is. But I can’t find it now.

A: 小题2:______________________________________. Where did you lose it?

B: Over there, on the playground. I left in a hurry without taking it.

A: 小题3:_______________________________?

B: Yes, I did. But now I haven’t found it yet.

A: Don’t worry. Maybe someone took it by mistake. 小题4:______________________________?

B: That’s a good idea. Thank you very much.

A: 小题5: ________________________________________.

慢性胃溃疡肉眼形态通常是（）

A.直径2cm以上火山口状或不规则溃疡

B.直径2cm以内圆形溃疡，贲门侧边缘呈阶梯状

C.直径2cm以内圆形溃疡，幽门侧边缘呈阶梯状

D.直径2cm以内圆形溃疡，幽门侧边缘呈潜掘状

E.直径2cm以内圆形溃疡，周围黏膜皱襞排列紊乱