—It’s cloudy outside. Please take an umbrella.

—　　　

A．Yes, take it easy

B．Well, it just depends

C．OK, just in case

D．All right, you’re welcome

引起儿童上消化道出血较少见的疾病是（）

A.慢性胃炎

B.食管静脉曲张

C.消化道溃疡

D.上消化道畸形

E.急性胃炎