硅质胶泥衬砌砖、板后必须进行（）。
A．冷处理
B．钝化处理
C．碱性处理
D．酸化处理
参考答案：D
18081÷x=123
x=18081÷123
x=174．______．
I believe the government regards the H1N1 as an important thing, and I also believe the officials are so _____
that everything will be under control. [ ]
A. grateful
B. determined
C. willing
D. peaceful
