单选题：Chronic heart failure is attributed to

题目内容：

Chronic heart failure is attributed to A．the dying heart cell
B．the effect of pharmaceutical
C．the weight of the patien
D．the life span of a perso

参考答案：

答案解析：

There was a profound silence after his remark.

There was a profound silence after his remark.A．proud B．short C．sudden D．deep

分类：卫生类题型：单选题

Many cities have restricted smoking in public places.A, limitedB．allowedC．stoppe

分类：卫生类题型：单选题

Such a database would be extremely costly to set up.A．establish B．destroy C．upda

分类：卫生类题型：单选题

分类：卫生类题型：单选题

分类：卫生类题型：单选题