酸性食糜进入小肠引起大量胰液分泌的主要机制是A．小肠粘膜释放胃泌素 B．小肠粘膜释放

—____

—Some rice, please.

A. What about something to drink?      

B. Would you like to have lunch with me?

C. May I take your order?              

______ has recently been done to improve the conditions of elementary schools, a great number of children are unable to go to school.

A．That

B．What

C．In spite of what

D．Though what

合成去甲肾上腺素的限速酶为（）

A.多巴脱羧酶

B.酪氨酸羟化酶

C.苯乙醇胺-N-甲基转移酶

D.单胺氧化酶

E.儿茶酚氧位甲基转移酶

男性，68岁，2小时前突觉左胸持续性闷痛，有紧压感，伴出汗、恶心，急诊：心电图示aVR导联ST段抬高，其他导联ST段压低≥0.1mV。既往有高血压病史及高脂血症病史。以心肌梗死的诊断收住院。

入院后5天，突然在胸骨左缘第3～4肋间闻及3/6级收缩期吹风样杂音。最大可能是

A．心梗后综合征

B．室间隔穿孔

C．急性左心室衰竭

D．心脏破裂

何谓车机联控？