对精密仪器设备、贵重文档发生火灾，（）用水灭火。
A、严禁
B、可以
C、最好
D、无所谓
参考答案：A
—What were you doing at 8 o’clock this morning?
—____.
A．I am having breakfast.
B．I want to go to visit my grandfather.
C．I was talking with my teacher at that time.
D．I stayed there for two days.
安排高血压患者饮食，错误的是（）。
A.限制食盐，适当补钾
B.控制热量
C.限制钙的摄入
D.限酒
E.限制精制糖的摄入
