题目

任务型阅读You are so tired at night，but you can't sleep. Here are some good ideas.First，you should be in a quiet room. That's important. You should put your feet in some warm water before you go to bed，and that's a traditional way. You should have a glass of milk. It's good for sleeping. You should think you are in a beautiful place. It's very quiet here，and there are many trees and you walk slowly. That sounds like a good idea. It can help you sleep soon.Sleeping is important to our health. Don't be worried. Go to bed early，eat more vegetables and do some exercise. And everyone12．今有化学反应：4XY2+Y2=2Z，则生成物Z的化学式可能用X、Y表示为X2Y5．