画出物体AB在平面镜中所成的像。

动物学家在南美旅行是发现一种被称为树獭的动物，该动物具有下列特点；皮肤上长有毛发，幼仔胎生，体温恒定，用肺呼吸，动物学家根据这些特点，把树獭归类为（　　）

Liu Tao: What's the time now, Yang Ling?

Yang Ling: It's four thirty. It's time to go home.

Liu Tao: It's raining(下雨).Where is my umbrella?

Yang Ling:Look!There's a red umbrella under the desk.

Liu Tao:That isn't my umbrella.

Yang Ling:There are four umbrellas near the blackboard. Which one is yours（你的），Liu Tao?

Liu Tao:The blue one. Thank you, Yang Ling.

Yang Ling:Shall we go home together？

Liu Tao:Great!Let's go.