慢性心力衰竭患者应（）
A.控制体力活动
B.增加钠盐摄入
C.以上都不对
D.增加锻炼强度
E.绝对卧床
参考答案：A
SVLAN由（）和（）组成。
3. The train had not come yet and the man ______ his watch anxiously.
A．focused on
B．glanced at
C．watched
D．Confirmed
