胃溃疡最常见的位置是（）。

A.胃前壁

B.胃后壁

C.胃大弯及胃底

D.胃小弯近贲门处

E.胃窦小弯侧

Passage One

Questions 26 to 28 are based on the passage you have just heard.

A．Because they need more protein than vegetables supply.

B．Because they cannot digest vegetables.

C．Because they use more energy than adults.

D．Because they cannot easily digest milk and milk products.