题目

阅读理解Brown has a good friend. Her name is Alice. They are both eleven years old. They study English in the same class. Brown is a naughty boy. He can't get up early every day, he can't finish his homework, too. Alice is a model student in her class. She is quiet in the library. She throws rubbish in the bin and she always helps the young pupils. She is polite and helpful. She helps Brown, too. She writes Brown a note: Do you want to be a model student? Well, you should be polite. You should walk in the corridors… （1） Are brown and Alice good friends? A . Yes, they 因式分解：x3-4x2+4x．