Unit3 Word Power课件 牛津版必修5
Unit3 Word Power课件 牛津版必修5第5页

It is like a teacher. This organ passes the blood around the body so it can run well. This is similar to the knowledge a teacher gives to students. Next is the _____, which is the student. This organ is the only one that can re-grow itself. It helps to clean the blood. This is like knowledge students get from teachers. Students always grow with newly found knowledge.

liver