慢性肾衰竭病人，GFR25ml/min
A．低盐饮食B．低蛋白饮食C．高蛋白饮食D．低盐优质蛋白饮食E．正常饮食
参考答案：B
热带沙漠气候的特征是（ ）
A．终年炎热干燥
B．终年高温多雨
C．全年高温，分旱雨两季
D．全年高温，分干湿两季
The policeman asked the man ______ at 9:00 last night. [ ]
A. what he is doing
B. what was he doing
C. what he was doing
