汽化冷却优势有（）。
A、节省冷却水
B、消除钢坯上的水冷黑色印
C、炉子的热损失少
D、冷却部件的寿命提高
参考答案：A, B, C, D
根据汉语提示完成单词。
1．I (意识到)that it doesn't matter if you trouble him. Because he is a kind man.
2. They are talking about learning the (挑战)．
3. (或许)the policeman knows where she is．
4. At last, the student understood the meaning of the story____(完全地):
5．Our teachers are very____(感动)．
夸美纽斯为6－12岁的儿童设计的学校是（）
