language in a way that silent or independent reading never can.

Reading aloud to the tape helps you the students develop and improve language skills -- reading, writing, speaking, and listening. And since you the students listen on a higher level than you read, listening to other readers stimulates growth and understanding of vocabulary and language patterns.

So why not hurry to listen and read to the tape-recording of the text we are going to learn today?

IV. Reading for forms

Read the text again to: cut/ the sentence into thought groups, blacken the predicates, darken the connectives and underline all the useful expressions.

V. Copying and making sentences

You are asked to copy all the useful expressions into your notebook after class as homework. You may make your own sentences with each of these expressions.

Expressions from CLONING：WHERE IS IT LEADING US? a way of...一种......的方法, make an exact copy of...生产与原型完全相同的......, grow... in a laboratory在实验室里种植......, identical in sex and appearance性别和相貌相同的,be produced from... 从......中产生出来, natural clones of each other自然克隆现象, have two major uses有两大用途, all the time 一直, produce commercial quantities of... 生产大量的供商用的......, research on...在......方面的研究, the cloning of animals克隆动物, undertake a procedure处理程序，attempts to do...尝试做......, the determination and patience of...，......的决心和耐心，be rewarded, 得到回报, with a breakthrough有一个突破, work like this程序如下, follow the progress of...关注......的成长, develop normally正常的成长, the disturbing news that.........的坏消息，become seriously ill病重, be cast down to do... 很沮丧地做......, affect other species 影响其他的物种, cloned mice克隆鼠, occur to...浮现在......的脑海里, a major difficulty for...一个......的主要困难, half the length of the life of .........的寿命的一半, despite the problems尽管有这些问题, produce a lamb生产了一只小羊, in a natural birth自然生产的方式, on the other hand另一方面, raise a storm of objections引起了一阵强烈的反对, have a great impact on... 对......产生了巨大的影响, become controversial引起了争议, open everybody's eyes to...使大家明白 , use... to cure serious illnesses利用......来治疗重病, produce human beings克隆人类, tell stories of... 报道......, clone themselves 克隆他们自己, raise moral questions 提出了道德问题, become nervous 开始惶恐不安, forbid research into... 禁止......的研究, accumulate evidence of... 收集......的证据 VI. Reading and transforming

CLONING：WHERE IS IT LEADING US? What is cloning? What are the two major uses of cloning? What is the progress of Dolly the sheep? What did Dolly's appearance raise? How did governments react to the technology of cloning? Cloning is a way of making an exact copy of another animal and plant. Firstly, gardeners use it all the time to produce commercial quantities of plants. Secondly, it is valuable for research on new plant species and medical research on animals. She seemed to develop normally in the beginning. Then Dolly had become seriously ill.

Dolly lived for six years，half the length of the life of the original sheep. Dolly's appearance raised a storm of objections and had a great impact on the media and public imagination． Governments became nervous and many forbade research into human cloning.