新视野大学英语视听说第四册unit8quiz答案.doc

Unit 8 Quiz单元小测验Part I Directions: Listen to the short dialogs, 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.Your answerCorrect answerCC2.(Listen to the audio recording for the question.)A. She agrees with the man.B. GMO spreads diseases.C. GM fish are abnormally large.D. Trees grow too fast.Your answerCorrect answerAA3.(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.Your answerCorrect answerDD4.(Listen to the audio recording for the question.)A. Evolution is more efficient than lab experiments.B. Evolution is less efficient than lab experiments.C. Evolution produces better strains.D. Lab experiments produce more strains.Your answerCorrect answerBB5.(Listen to the audio recording for the question.)A. The woman wants to be coaxed to clone herself.B. Beauty is in the eyes of the beholder.C. Love is blind.D. The man wants copies of the girl through cloning.Your answerCorrect answerDDPart II Directions: Listen to the passage(s) three times. When the passage is read for the first time, listen for the general idea. When the passage is read for the second time, fill in the blanks numbered from S1 to S7 with the exact words you hear. For blanks numbered from S8 to S10, write down either the exact words you hear or the main points in your own words. When the passage is read for 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 (S1) information about the complex events that occur during human development. A primary goal of this work is to (S2) how stem cells become divided or differentiated. Scientists know that turning genes on and off is (S3) to this process. Some of the most serious medical conditions, such as cancer and birth defects, are due to (S4) cell division and differentiation. A better understanding of the genetic and molecular controls of these processes may yield information about (S5) such diseases arise and suggest new strategies for therapy. A significant barrier (S6) this use and most uses of stem cells is that scientists do not yet fully understand the (S7) that turn specific genes on and off to influence the differentiation of the stem cell.(S8) 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. (S9) to treat diseases including Parkinsons and Alzheimers diseases, spinal cord injury, stroke, burns, heart disease and diabetes.For example, (S10) . Your answerCorrect answer(1)yeildyield(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 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 Directions: Listen to the following recording, 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.Your answerCorrect answerBB2.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.Your answerCorrect answerDD3.Why is the Iceland 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.Your answerCorrect answerCC4.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.Your answerCorrect answerAA5.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.Your answerCorrect answerCCPart IVDirections: Choose the right answer. 1.With the advent of the genetic map, we know where everything is, but do we know where to _?A. go for itB. go with itC. get for itD. get with itYour answerCorrect answerCB2.As you know, it has taken millions of years of evolution and natural selection