干粉灭火器的优点不包括（）。
A、速度快
B、灭火效力大
C、导电
参考答案：C
The little boy with an overcoat felt grateful _____ us for our letting him ______ the game. [ ]
A. for; join in
B. to; to join in
C. with; join
D. to; join in
痰饮水走肠间，证见腹满，口舌干燥，当用：
A．己椒苈黄丸
B．苓桂术甘汤
C．五苓散
D．厚朴大黄汤
E．猪苓汤
