雅思阅读材料：动物也爱跑步机
对于每一个准备考雅思的同学来说，阅读一定的原汁原味的英语文章对于提升雅思考试分数是非常有帮助的，那么今天就和留学群的小编一起来看看雅思阅读材料：动物也爱跑步机。For the experiment， the wheels were enclosed so that small animals could come and go but so that larger animals could not knock them over. Dr. Meijer set up motion sens...