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1、Period OneWarming Up & Reading课 文 预 读.课文理解1Dolly the sheep _.Alooked exactly like the sheep that provides the eggBwas the exact copy of the sheep that provides the nucleusClooked like the sheep that gave birth to itDhad the characteristics of all three sheep2It can be inferred from the passage that
2、a cloned animal _.Ausually lives as long as the original oneBusually lives longer than the original oneCusually lives shorter than the original oneDis usually as healthy as the original one3Which of the following is NOT an advantage of cloning?ACloning can be used for medical purposes.BLarge quantit
3、ies of food can be produced by cloning.CCloning can help keep animals from becoming extinct.DFamous persons who have passed away can be cloned.4Which of the following is NOT a problem or danger of cloning according to the passage?ACloned Bin Laden would do harm to the world.BAnimal clones may develo
4、p the illness of older animals and may die younger than the donor animals.CThere are moral objections to cloning human beings.DToo much cloning may lead to the destruction of the balance of nature.5From the passage，we can see _.ADollys original sheep lived 12 yearsBDollys baby was also a cloned oneC
5、newspapers did not disclose cloning sheepDofficials became nervous about cloning 答案1.B2.C3.D4.D5.D.课文语法填空Cloning is a way of 1._(make)an exact copy of another animal or plant.2._has two major uses.One is 3._gardeners use it to produce commercial quantities of plants.The other is that it is valuable
6、for research on new species and for medical research on animals.4._，the process of cloning is difficult5._(undertake)Many attempts to clone mammals failed.The first successful clone，Dolly the sheep，made the whole6._(science)world follow its process，though it had7._problems than the normal sheep.On t
7、he other hand，Dollys appearance8._(raise)a storm of objections and had a great impact9._the media and public10._(imagine)Different people have different opinions on it.However，scientists still wonder whether cloning will help or harm us and where it is leading us.答案1.making2.It3.that4.However5.to un
8、dertake6.scientific7more8.raised9.on10.imagination【话题语篇导读】What is cloning?Cloning is a process used to create an exact copy of a mammal by using the complete genetic material of a regular body cell.Different from the common propagation，cloning needs only one cell and without sex.In 1997，the great ne
9、ws shocked the whole world that the British scientists created a lamb named Dolly from a single cell.Miraculously，the cell had been taken from the udder of adult sheep，which showed the first cloning experiment was successful.When the cloning technology improves so quickly，many scientists and doctors
10、 have different opinions.Someone thinks it is good but someone thinks it is bad.Cloning can bring many benefits to the human，such as rejuvenation，helpful for defective genes，liver failure，kidney failure and leukemia.These diseases are very difficult to cure，if we use the cloning technology，we can ch
11、ange the order of genetic DNA，so we can save lots of people.But cloning still has some problems.The scientists found that the cloning animals gene is a little different from the original animals.So its life will be shorter than the real life.The fact has proved thatthe cloning sheep Dolly died.It on
12、ly has the half life of the common sheep.知 识 梳 理.核心单词一、单词拼写1They think the cloned animals like Dolly the sheep，which _(总共) lived only six years and a half，cant live a normal life.2Old people are usually more_(保守的)than young people.3The scientists are struggling for a _(突破)in cancer research.4We have
13、 worked out a new set of_(程序)for using this machine.5The area has remained untouched by_(商业的)development.答案1.altogether2.conservative3.breakthrough4.procedures5commercial二、单句语法填空1You mentioned that you could teach English as a reward，which is _(exact)what I want.2I just need to make a few _(correct)
14、and then we can send it to the printer.3You can complain，but I doubt whether it will make any _(differ)4Would you like to do me a favour _(send)an email to my grandson?5My father supported me in taking part in more social activities，_my mother objected to it.答案1.exactly2.corrections3.difference4.to
15、send5.while.重点短语一、补全短语1_ the time一直，始终2pay _得到好结果；取得成功；偿清3cast _使失望；使沮丧4have a great impact _对有很大影响5_ favour of赞成；支持6be appropriate _对来说适合7open ones eyes _使看清答案1.all2.off3.down4.on5.in6.to7.to二、用所给短语的适当形式填空cast down；have a great impact on；on the other hand；object to；to be exact；differ from；pay off；in f
