监狱对罪犯执行刑罚是我国监狱工作的一项最基本任务，为了实现对罪犯的（）。
A、一般预防
B、教育预防
C、特殊预防
D、改造预防
参考答案：A, C
Read and write. 根据对话内容，完成下列各题。
Li Ming and Jenny are eating supper.
L: Would you like some porridge?
J: Yes, please. Oh, I like sugar on it. Do you like sugar?
L: No, I like salt on it.
J: Oh, I like salt on pizza, and I also put pepper on it.
L: Mmm..., I think it is delicious. Let me taste (品尝) it.
1. They are eating .
2. What do they eat?
3. Does Jenny like salt on porridge?
4. Does Li Ming like pepper on the pizza?
5. What do you like on porridge?
热处理选用的钢一般为本质细晶粒钢。
