. Mary joined the local drama club but didn’t seem to __________, so she left.

A．fit in

B．adapt to

C．agree on

D．settle in

患者，男性，26岁。排柏油便2天。既往无胃病史及肝病史，近期无服药史。查体：血压70/40mmHg，心率120/min，腹平软，无压痛，肝脾未及

为明确诊断，首选的检查方法是

A．胃镜

B．X线钡剂检查

C．腹部CT

D．手术探查

E．胃泌素功能检查