Teaching aims
（教学目的）
Knowledge aims:
1. Get students to learn the useful new words and expressions in this part:
clone, commercial, producer, undertake, arbitrary, object, forbid, accumulate, cast down, object to, the media, in favour of, etc.
2. Let students learn about cloning
Ability aims:
1. Develop students’ reading ability and let them learn different reading skills.
2. Enable students to talk about cloning
Emotional aims
1. Help the Ss know about cloning.
2. Develop students’ sense of cooperative learning.
