大学英语四级考试听力真题_大学英语听力

大学英语四级考试听力真题

　　参考答案：

　　26. A) To introduce the chief of the city police force.

　　27. D) He holds a master s degree in criminology.

　　28. B) To get police officers closer to the local people.

　　29. C) Effective.

　　30. B) There are numerous languages in existence.

　　31. C) It is something we are born with.

　　32. D) How children learn to use language.

　　Passage Three

　　When US spacewoman Joan Higginbotham is not flying and working in space, she might be found somewhere on earth giving a speech. Higginbotham, who grew up in Chicago and became an engineer before joining NASA, that is the National Air and Space Administration, gives about a dozen speeches a year. Each speech is different because she tailors her remarks to each audience. Through interviews and E-mails, she finds out in advance her listeners educational level and what information they want to know. On the subject of space walks, for example, audiences vary in their interests and how much complexity they can comprehend. To elementary school children, Higginbotham may discuss a problem that many kids want to know about. How do spacemen in a spacesuit eat, drink, and go to the bathroom? Her answer is the spacesuit is really a small spacecraft with room for food and water-containers, and a waste-collection system. To a high school audience, she might satisfy a curiosity that often arises in her pre-speech interviews with students who obviously have seen many science fiction movies. Do spacemen carry weapons in case they encounter enemies in space? Her answer is No. To scientists, she might provide technical details on such topics as the design of spacesuits that protects spacemen from the deadly temperature extremes of space. Just as elaborate preparation is required for success in space, Higginbotham says that its important for speakers to learn as much as possible about their listeners before a speech because every audience is different.