48. Man cannot prevent the world from being polluted¹ because _______.
　　A. the population of the world is increasing faster
　　B. people use too many man-made² materials
　　C. we have more industry 　　　 D. we are producing more cars, trucks and buses
　　49. According³ to the passage, what does man care most among the following?
　　A. Health.　　B. Industry.　　C. Clean air　 D. The future of the children
　　50.The story about the pilot tells us that _______.
　　A. man knows where the society is going
　　B. people don‘t welcome the rapid development of modern society
　　C. man can do little about the problem of pollution
　　D. the speaker is worried about the future of our society
　　51.What dose⁴ the writer really want to say in the passage?
　　A. With the development of technology, pollution has become a serious problem.
　　B. We should control the speed of the development to stop pollution.
　　C. It‘s time we did something to reduce pollution.
　　D. As industry is growing fast, pollution is the natural result.
　　E
　　A wind tunnel⁵ (风洞) is used for teasing⁶ planes or plane models. In a wind tunnel air is blown over a plane or a model placed in a test section(区).Wind tunnel test sections are different in size depending on airflow speed requirements⁷. Some low-speed tunnels⁸ have test sections large enough for a complete small plane. In the very high speed tunnels used for space testing, however, the model may be as small as a pencil.
　　There are two ways of feeding air to the test section. In the constant⁹ flow tunnel, airflow is produced by electric fans. It is forced through the tunnel to the test section, then through another tunnel section back to the starting point for reuse¹⁰.
　　The other way involves (卷入) storing high-pressure air in a box, sending it out by a controlling device(装置) to pass through the tunnel and test section into another box. This way is usually used for a very short period of high-speed airflow.
　　Wind tunnels are usually used to test planes before they are flown. Problems in a plane can be found when it meets the high-speed airflow in the tunnel. For example, if the wings are built so that they would weaken(become weak) at high speeds, this fact can be discovered in the tunnel, saving¹¹ many lives and millions of dollars.
　　In a wind tunnel, scientists also find out how different planes will act different speeds. They find out such things as how the air dives by the wing surfaces, how slowly a plane can fly before it starts to drop, and how fast it can climb.
　　52.Some wind tunnel sections are larger than others because ________.
　　A. they are used large planes 　　　B. stronger wind can be produced in them
　　C. they are built to meet a higher speed test D. the wind used in them flows at a lower¹² speed
　　53.Which of the following shows the right way of feeding air to a wind tunnel section usually
　　used for a high speed test?
　　( ← = wind flow = test section)
　　54. “This fact” in paragraph¹³ 4 of the text refers to _______.
　　A. the wing are not good enough 　　B. it costs a lot to test a plane
　　C. some problems are found with the plane D. many people will die in a plane accident
　　55. A wind tunnel can be used to find out ______.
　　A. how fast a plane can rise 　　　B. how smooth a plane‘s surface is
　　C. if a plane can land in a very strong wind D. if a plane will drop when flying at a low height
　　第四部分：写作
　　第一节：短文改错
　　此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个勾(√); 如有错误(每行只有一个错误), 则按下列情况改正:
　　多一个词: 把多余的词用斜线（\）划掉, 在该行右边横线上写出该词,并也用斜线划掉。
　　缺一个词: 在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
　　错一个词: 在错的词下划一横线,在该行右边横线上写出改正后的词。
　　注意: 原行没有错的不要改。
　　A language is always changed. In a society　　　　　　　56._________
　　which life continues year after year without obvious changes,　　　　57._________
　　even the change doesn‘t change much, too. The earliest known¹⁴ 　　　　58._________
　　languages have difficult grammar but a small limit vocabulary(词汇).　　　59._________
　　Over the centuries, the grammar changed and the vocabulary grown.　　　60._________
　　For an example, the English and Spanish who 　　　　　　　61._________
　　came to America during the 16th and the 17th century 　　　　　　62._________
　　gave the name to all the plants and animals. 　　　　　　　　63._________
　　In this way, hundreds new words and expressions　　　　　　　64._________
　　and idioms introduced into English and Spanish vocabularies. 　　　　65._________
　　第二节：书面表达
　　Mr Luois Alexander 应邀来渝讲学，并到你校参观，和一些学生座谈。现由你（张渝）主持座谈会，代表你校学生用英语致词欢迎词。欢迎词应包括以下内容要点：
　　1. 对来访客人表示热烈欢迎。
　　2. 介绍Mr Luois Alexander(英国著名语言学家)。
　　3. 他的著作极其丰富，包括大家熟知的《新概念英语》（New Concept¹⁵ English）跟我学（Follow Me）等。
　　4. 来渝目的：讲学、进一步了解中国中学生英语学习的情况。
　　5. 请Mr Alexander 作指导，提建议。
　　6. 请大家就英语学习方面的问题向他提问。
　　注意：1.行文连贯、通顺，字数100词左右。
　　2.行文不必写出发言人的学校及个人姓名。如要写出，须用规定的人名及校名。
　　3.生词：语言学家—linguist¹⁶;讲学—give a lecture
　　Keys:
　　1—10 ABDDD CBCCB 11—20 BBCDA CBBCD 21—30 ACDCB ACADA 31—40 BDCAB BACDD 41—50 ACCCD ACCBD 51—55 CDDAA
　　56. changed → changing 57. which → in which (where) 58. too → either
　　59. limit → limited 60. grown → grew 61. 去掉 an 62. 正确
　　63. name → names 64. new → of new 65. introduced → were introduced
　　Dear schoolmates¹⁷, First of all, let s give our warmest welcome to our honourable¹⁸ guest —— Mr Luois Alexander. Mr Luois Alexander is a world-famous¹⁹ English linguist. He s written lots of works²⁰, including New Concept English, Follow Me and so on. All these are well known to us all. Mr Alexander is invited to Chongqing to give lectures, and today he s going to have a talk with us to get a further understanding of English study in middle schools in China. If you have any questions on English, you are free to ask him for help. Now let s invited Mr Alexander to give us a talk and advice on English study. That s all. Thank you!

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