关于胃继发性肿瘤，叙述正确的有（）。

A.最常见的临床表现是出血和上腹痛

B.临床多见

C.大体形态常呈溃疡、革囊胃或息肉样

D.胃内转移主要见于胃底

E.常见的原发肿瘤包括肺癌、乳腺癌、恶性黑色素瘤等

----- Where did you ______ our chemistry teacher?

----- It was in the supermarket ______ I saw him.

A．come to, where

B．come across, that

C．come across, where

D．come to, that