人教版高中英语课件：Unit2 Reading Cloning Where is it leading us.pptVIP

unit2 reading dolly the sheep its the most famous sheep in the world. do you know how dolly is different from other sheep? she was cloned while the others were born naturally. it is the copy of another sheep. 1.read the text fast while listening and find the main idea of each paragraph. cloning is a way of making an exact copy of another animal and plant. cloning has two major uses. the problems of dolly. the effect of dolly. it is forbidden to clone human beings. para 1. para 2. para 3. para 4. para 5. 2. read the text carefully and fill in the blanks. definitioncloning is a way of making _ of another animal and plant. major uses of cloning gardeners use it to _ commercial quantities of plants. it is valuable for research on new plant species and for _ research on animals. an exact copy produce medical about dolly the sheep encouraging news: dolly developed _. disturbing news: dolly lived for six years and a half years, half the length of the life of the _ sheep. arguments on cloning newspapers told stories of _ hoping to clone themselves and religious leaders raised _. many governments _ research into human cloning while some continued to accumulate _ of the abundant medical aid. evil leaders moral questions forbade evidence 1). the main idea of the text is_ a. animal cloning is very valuable and can benefit the world. b. animal cloning could be misused by bad people so it must be forbidden c. animal cloning is well developed because dolly the sheep was born. d. animal cloning raised arguments and scientists are not sure about its future. 3. choose the best answer. 2). which of the following statements about cloning is not true according to text? _ a. cloning is something that has been developed quite recently. b. twins that look exactly the same are originally from the same egg. c. cloning is used by gardeners to make more money. d. animal cloning is much more difficult than plant cloning. a 3). the cloning of dolly the sheep succeeded because_. a. its easier to clone a sheep than other animals b. the scientists were determined and worked hard with patience c. the scientists were rewarded and got lots of money d. many other attempts to clone mammals failed b 4). the lamb is the clone of the cell from sheep because_. a. it provides the egg cell b. it gives birth to the lamb c. it provides the nucleus d. it is a female sheep 5). it can be inferred from the passage that a cloned animal. a.usually lives as long as the original one b. usually lives longer than the original one c. usually dies earlier than the original one d. is usually as healthy as the original one 6). which of the following is wrong? a. cloned people would live forever. b. cloned people may be killed at will for medical aid. c. a woman would have difficulty recognizing her real husband. d. men will die out because a woman can give birth to a baby without a husband. 7). the sheep that donated the somatic cell most probably lived _ years. a. 3 b. 6 c. 12 d. 13 8). which of the following is not a problem or danger of cloning mentioned in the text? a. evil leaders may want to clone themselves. b. animal clones may develop the illness of older animals and may die younger than the donor animals. c. there are moral objections to cloning human beings. d. too much cloning may lead to the destruction of the balance of nature. 9). which of the following is not an advantage of cloning? a. cloning can be used for medical purposes. b. large quantities of food can be produced by cloning. c. famous persons who have passed away can be cloned. d. cloning can help keep animals from becoming extinct. 10). in the second paragraph, the word “straightforward” means _. a. uncomplicated b. honest c. frank d. difficult 11). from the last paragraph we can infer that _. a. cloning will come to an end because of the objections b. cloned human beings will be produced in the near future c. many countries will use cloning in a wise way d. all the research into human beings will be forbidden c 12). what about the writers attitude toward cloning in this passage? a. the writer is against cloning. b. the writer is in favor of cloning. c. the writer does not state any personal opinion about cloning. the writer is in agreement with cloning. do you know the procedure of cloning a sheep? language points 1.identical be identical with 2.cast down 3.be appropriate to 4.raise v. 5.a storm of 6.have/make a stong/great impact on 7.forbid doing/sb. to do sth. 8.accumulate 9.evidence un. 10. be bound to do 例句观察(课文原句) the fact is that these are both examples of natural clones.（作表 语） the fact that she seemed to develop normally was very encouraging.（ 作同位语） grammar then came the disturbing news that dolly had become seriously ill.（ 作同位语） however, scientists still wonder whether cloning will help or harm us and where it is leading us.（作 宾语） discussion 1.what do you think is the writers view in th