托福 听力加试 鸟类迁徙bird migration.doc

托福机经听力加试鸟类迁徙bird migration原文及试题答案Conversation：term paper of bird migrationListen to a conversation between a student and his Biology professor.S: Dr. Russell, I was hoping to discuss my term paper with you Im getting a little bit stuck here.P: Of course, so.what do you have so far Whats your topicS: Well, I wanted to write about bird migration, but Im having trouble finding enough sources.P: Youre having trouble finding sources on bird migrationS: No, actually, on the particular aspect of bird migration that I want to write about.The thing is, I wanted to write specifically on early theories of bird migration.describe some of the theories. Like how Aristotle thought that birds changed into different species during the winter. Or how other naturalists thought that bigger birds carried smaller birds to warmer spots for the wintertime. But Ive only got a couple of books to work with right now.P: Hm.I have to admit that its an interesting topic, and you certainly seem excited by it. But remember I told you all to ask yourselves how your topic is going to help you show that you can apply what youve learned this semester. A summary or description is not really what Im looking for as much as your analysis of a certain topic.S: I guess its not really what were supposed to do, huhP: Right. So, how about we think about some other ideas for your paper. I mean you dont need to discard the idea completely. but. take a really different focus. Um. for example.you could present what you think are some reasons-the rationale-behind some of the erroneous theories early naturalists had. But, youll be supporting your views with current research; those are the sources youll need to seek out.S: Ok, I think I see what youre saying. So, like today.today we know that lots of small birds migrate at night, but maybe cause people didnt see them-didnt see the small birds migrating-they only saw bigger birds, like geese migrating during the day. They thought that the big birds were carrying the small ones under their wings.P: There you go! Thats exactly what I mean. Youre showing that youre thinking about the topic, not just telling me what you read.S: Ok, I also have a really cool example of a migratory bird that Id like to discuss in my paper. Its the Common PoorwillI mean it seems that some Ornithologists believe that the Common Poorwill really does hibernate instead of migrating-that its maybe the only bird that does.P: If I were you, I would stick just with migration research. Remember, this is only a 15-page paper.S: Ok, I see your point.P: But its great that youre finding this all so interesting. I want you to come back to see me in a week so we can take a look at the new direction in your paper and evaluate the sources youve found in the meantime.中文大意:Male Student：老师，我想跟你讨论一下我的学期论文。我卡住了，找不到这方面足够的数据。）Female Professor：You cant find enough sources on bird migration（语调上扬。最后一题，重听题的考点。）Male Student：I wanted to write on theories early bird migration. 关于Aristotle对于这个题目的看法等等。Female Professor：哦你确实找到了一个好的题目，但是你要知道我的要求是你们的论文要反映你们这学期学了什么。不要只是做 summary or description，我想要看到你的special analysis。Male Student：我想，总结和描述是不够的。Female Professor：没错，不如我们想想其他的方向。其实你不需要完全放弃discard之前找的数据，你可以换种想法，用rational 的方式。可以写现在的新研究(current research) 如何支持(support)或者驳斥以前的(historically) old theory。Male Student：我想可以写bird migrate at night。以前人们大多只看到大鸟，所以认为小鸟在大鸟的翅膀下迁徙什么的，其实新发现是，因为小鸟在夜间迁徙，人们看不到。(通过说这个topic来验证自己理解了老师的意图change the topic from ancient to recent)Female Professor：对，这正是我说的，你要展示你对这个主题的想法，而不是你读了哪些数据。Male Student：I want to write about the birds that do not migrate. They hibernate during winter.Female Professor：如果我是你，我就不会在一份15页的论文中写这么多。Male Student：我知道妳的意思了。Female Professor：希望你一周内再来找我，看看论文的新的方向（new direction）进行得如何。Male Student：好的，谢谢。题目：问题一：Why does the student go to see the professor答案：（C）he cannot find enough material in writing his paper.问题二：How does the professor help the student答案：（A）建议学生改变论文方向。问题三：What information will the man probably include in his paper (choose two answers)答案：（B）analysis（D）focus on one topic问题四：Why does the student 提到birds migrate at night？答案：（A）通过说这个topic来验证自己理解了老师的意图he understands what the teacher said.问题五：Listen again to part of the conversation. Then answer the question.S: Well, I wanted to write about bird migration, but Im having trouble finding enough sources.P: Youre having trouble finding sources on bird migrationWhat does the professor imply when she says this: Youre having trouble finding sources on bird migration. 答案：（B）教授认为找资料很容易。背景知识补充：这篇听力内容，虽然是一般教授与同学讨论论文内容的长对话，不过值得注意的是，动物迁徒，包括动物、鸟类、昆虫、甚至鱼类等，生物对栖息地迁徒相关内容，一直不断出现在新托福iBT考题中，无论在听、说、读、写都曾出现相关考题，因此备考新托福的同学，应该对动物迁徒有一定的认识。相关文章：Migration Birds Know No Boundaries （鸟类迁徙无边界） The migration of birds is one of the most fascinating and least understood events in nature. Arctic terns are the champions of long-distance migration. They fly about 11,000 miles (17,700 kilometers) from their breeding grounds in the Arctic to their winter home in the Antarctic.Why birds migrate （为什么鸟类迁徙） In many parts of the world, the foods that birds eat become scarce during certain seasons of the year. Most birds would starve if they had to remain in such places through the unfavorable season. Although birds migrate to survive, the factors that actually trigger their migrations are much more difficult to explain. For example, many northern species leave their summer home while the weather is still warm and the food supply plentiful. Bird migrations are probably regulated by the glandular system. The glands produce chemical substances called hormones. Changes in hormone production stimulate the birds to migrate. Among some northern species, hormone production is affected by the length of daylight. As the daylight hours shorten, hormonal changes cause the birds to prepare for their migratory flight south.