烧结过程中温度最高的带是（）。
A.烧结矿带
B.干燥预热带
C.燃烧带
D.过湿带
参考答案：C
宋代书法家黄庭坚，他的作品中称作草书的极品为？
— Why does the lake smell terrible?
— Because large quantities of water ____ . [ ]
A. have polluted
B. is being polluted
C. has been polluted
D. have been polluted
