新视野视听说第四册quiz8答案.doc

Unit 8Part I Script Directions: Listen to the short dialogs, and then choose the correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers. 1.(Listen to the audio recording for the question.) A. He does not want to eat GM food. B. He wants GM food labeled.C. He does not care if GM food is labeled. D. He agrees with the woman.2.(Listen to the audio recording for the question.)A. The man is against organ cloning.B. The woman is against organ cloning. C. The man is a scientist devoted to organ cloning. D. The woman will let her organ clones once it fails.3.(Listen to the audio recording for the question.) A. She wants the man to go to the meeting. B. She wants the man to pick up the children. C. She wants to clone the man.D. She does not want a clone of the man.4.(Listen to the audio recording for the question.) A. The two speakers have a lot of common interests.B. The two speakers have both chosen Mr. Greens elective course. C. The woman has a lot of knowledge on genetics. D. The man is beginning to like genetics.5.(Listen to the audio recording for the question.) A. Both the man and the woman are against GM food. B. Both the man and the woman are for the GM food. C. The woman is probably a consumer of GM foods.D. The man is probably a consumer of GM foods.Part II Script Directions: Listen to the passage three times. When the passage is read for the first time, listen for the general idea. When the passage is read the second time, fill in the blanks numbered from (1) to (7) with the exact words you hear. For blanks numbered from (8) to (10), write down either the exact words you hear or the main points in your own words. When the passage is read the third time, check your answers. There are many ways in which human stem cells can be used in basic research and in clinical research. Studies of human stem cells may (1) information about the complex events that occur during human development. A primary goal of this work is to (2) how stem cells become divided or differentiated (分化). Scientists know that turning genes on and off is (3) to this process. Some of the most serious medical conditions, such as cancer and birth defects, are due to (4) cell division and differentiation. A better understanding of the genetic and molecular controls of these processes may yield information about (5) such diseases arise and suggest new strategies for therapy. A significant barrier (6) this use and most uses of stem cells is that scientists do not yet fully understand the (7) that turn specific genes on and off to influence the differentiation of the stem cell. (8) that could be used for cell-based therapies. Today, donated organs and tissues are often used to replace ailing or destroyed tissue, but the need for transplantable tissues and organs far outweighs the available supply. (9) to treat diseases including Parkinsons and Alzheimers diseases, spinal cord injury, stroke, burns, heart disease and diabetes. For example, (10). Your answerCorrect answer(1)yieldyield(2)identifyidentify(3)centralcentral(4)abnormalabnormal(5)howhow(6)toto(7)signalssignals(8)The most important potential application of human stem cells is perhaps the generation of cells and tissuesThe most important potential application of human stem cells is perhaps the generation of cells and tissues(9)Stem cells, directed to differentiate into specific cell types, will offer a source of replacement cells and tissues(10)it may become possible to generate healthy heart muscle cells in the laboratory and then transplant those cells into patients with chronic heart diseasePart III Script Directions: Listen to the following recording, and then choose the correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers. 1.What is the Iceland company doing? A. Creating a detailed map of the genes of the Icelandic people.B. Creating a detailed map of all human genes. C. Creating a map as detailed as those by some other projects. D. Creating a map less detailed than that by the American company.2.Why do the people of Iceland present a special opportunity to study the human genome? A. Iceland has a small population. B. Most of the Icelanders have a small group of ancestors. C. Plenty of records of their ancestors are available.D. All of the above.3.Why is the Iceland genome project superior to the American genome project? A. Because it observes 200 million people. B. Because it observes 14 large families.C. Because it observes more families than any other project. D. Because it observes more families than many other projects.4.Why can the study of genes help to identify the causes of diseases?A. Small genetic differences may be related to some diseases. B. Large genetic differences may be related to some diseases. C. The genetic similarity may throw light on some diseases. D. Similar genes will cause similar diseases.5.What is the passage mainly concerned about? A. Finding out the history of Irish families. B. Finding out the special genes of Irish people to cure their diseases.C. Creating a detailed human genetic map to identify disease-causing genes. D. Creating a detailed human genetic map to identify abnormally small genes.Part IVDirections: Choose the best answer to each of the following statements. 1.With the advent of the genetic map we know what everything is, but do we know where to _? A. go for itB. go with it C. get for it D. get with it2.As you know, it has taken millions of years of evolution and natural selection to get us _ we are today. A. how B. who C. whatD. where3.Its too late to _ the clock. Well just have to depend on common sense to solve uncommon problems. A. return B. turn aroundC. turn back D. turn round4.Many prisoners have been freed through DNA testing, except for the ones whose death sentence has already been _.A. carried out B. carried on C. carried forward D. carried away5.I guess there would be some tremendous medical advantages in that sort of research. Youve said _. A. a mouth B. the mouthC. a mouthful D. the mouthful6.Plant breeders have already used preliminary informati