In some parts of Asia, a person mustn’t sit with his feet _____ another person, _______ is

considered impolite.

A．pointing at; it

B．pointed at; which

C．pointing at; which

D．pointed at; that

该患者首先应考虑的诊断是

A．消化性溃疡

B．急性胃黏膜损害

C．食管贲门黏膜撕裂综合征

D．胃癌