河北省石家庄市复兴中学人教版高中英语选修八：UNIT2 CLONING（2） 学案 WORD版缺答案.doc

1、 选修八 Unit2 Cloning班级 姓名 小组_第_号【学习目标】Knowledge aims:1Get students to learn the useful words and expressions in this unit. 2. Let students learn about the procedure of cloning. 【学习重点】 1. Develop students different reading abilities.2. Enable students to talk about the procedure of cloning.【学习难点】1. Let

2、 students learn more about the cloning techonology; 2. Get students to learn different reading skills,especially the reading ability of understanding implied meaning of the author.【学情分析】Students need to improve their vocabulary ability.一 基础知识导入Words dictation1_2_3_4_5_6_7_8_9_10_11_12_13_14_15_16_17

3、_18_19_20_二.自主学习 提问展示快速阅读课文，然后完成下列问题。1.What is the main idea of the passage?The passage tells us that animal cloning raised _ and scientists are not sure about its_.2. What is the writing style?A. Expositive(说明文) B. Descriptive（记叙文）C. Argumentative（议论文）3. 段落排序 _ Cloning has two major uses and succes

4、sful clone._.Cloning is a way of making an exact copy of another animal and plant(definition)_. The effect of Dolly._. It is forbidden to clone human beings._.The problems of Dolly.4. True or false1. Four female sheep participate in the cloning of a new sheep.2. Electricity is needed in the procedur

5、e.3. Sheep B provides a somatic cell for the clone.4. The lamb is the exact copy of sheep A5.三 小组讨论，提问展示1. In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-make. Explain how they differ. differ vi. different, differencediffer是不及物动词, 主要有两个义项：“不同, 相异；不同

6、意, 意见相左”。1). sb. differ from/with sb. on/about sth.; 2). sth. and sth. differ in ; 3). sth. differ from sth .【练习】她的方法跟我的没有很大不同。 Her method _.现代飞机跟早期的在很多方面有所不同。Modern airplanes _ early ones _ many aspects.对于如何解决问题, 我跟他的意见不一致。I _ how to solve the problem.2. 这种现象也发生在动物身上，从同一个原生卵产生性别与外貌相同的双胞胎也是克隆。【填空】It also happens in animals when twins _ are produced from the same_ .3. 研究克隆的科学家们沮丧地发现多莉得的病更容易发生在年老的动物身上。【填空】Cloning scientists _ that Dollys illnesses were more _ a much older animal.四. 随堂训练 课堂小结和疑难问