题目

As we all know, sleep is very important and necessary. I would love everyone to develop the following four habits to have better sleep without needing the alarm（闹钟）wake-up call. ______11______If you eat much food an hour before you go to bed, your body will hate you, because your body needs time to digest while you are still awake. ______12______When I hear on TV that people just need 30-minute exercise a week, I think that’s wrong. Every person should get 30-minute exercise every day. When you exercise, your body uses energy and feels tired. You have to recover from the tire图1所示的小女孩站在毛玻璃前看不清自己的像，这是由于光的 反射造成的；图2所示的是透过装有水的圆柱形玻璃容器看到图案变形的领带，这是光的 现象．