An altimeter(高度计) is an instrument used in an airplane to tell the pilot how high he is flying. The altimeter used in most airplanes is a kind of barometer(气压计), which, like barometer found in ordinary homes, is a measuring instrument for air pressure. The weight of the atmosphere presses downwards everywhere. At sea level this pressure is more than 14 pounds on every square inch of the surface. The higher you go into the air, the lower the air pressure is. An altimeter measures this air pressure to show the altitude of the airplane, or, how high it is above sea level.

But the altimeter does not show how high the plane is above the ground. A plane might be flying at an altitude of 15,000 feet, but it would be only a thousand feet or so above the ground if the land in that area happened to be 14,000 feet above sea level. The pilot adjusts his altimeter to the actual sea-level pressure before leaving the airport and then corrects it in flight by new information given to him by radio. He flies high enough to be above any mountain he may pass on his course .The barometer altimeter is correct within about 300 feet.

Another kind of altimeter, the radio altimeter, makes use of radio reflection. It calculates the height of the flying plane by sending out electrical signals to the surface below and measuring the time required for them to bounce back(反弹). It is correct within 15 feet over water, but is not reliable over land. Big planes usually have both kinds of altimeter.

67. Which of the following diagrams gives the correct relationship between altimeters and barometers? (a----altimeters, b----barometers)

68. The following drawing shows a plane flying over a mountain. Which of the heights given in the drawing is given by the barometer altimeter in the plane at this moment?

69. Suppose a plane using a radio altimeter is flying 10,000 meters above highland which is 4,000 meters above sea level. What reading will be given by the altimeter?

   A.10,000meters.   B. 4,000meters.    C.14,000meters.    D. 6,000 meters.

70. Suppose a plane using both kinds of altimeters is flying over a mountainous area where the land rises and falls very abruptly (迅速地). The pilot keeps his plane steady at the same height. What kind of reading will you get on each of the altimeters?

   A. The readings on both altimeters will remain steady.

   B. The readings on both altimeters will rise and fall abruptly.

   C. The readings on the barometer altimeter will rise and fall abruptly, while that on the radio altimeter will remain steady.

   D. The readings on the radio altimeter will rise and fall abruptly, while that on the barometer altimeter will remain steady.

第二节 语法填空(共10小题;每小题l 5分.满分l5分)

       阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空,并将答案填写在答题卡标号为16—25的相应位置上。

       Keeping a diary in English is one of the 16__________ (effect) ways to improve our English writing ability.

       17._____________ (compare) with other forms of writing, it is shorter and takes 18.____________ time. It can help us to develop the habit of thinking in English. 19.____________ we persist in this practice, gradually we’ll learn how to express ourselves in English. In keeping a diary in English, we certainly run up against many 20.__________. In the first place, 21.____________ often happens that we have trouble finding appropriate words and phrases to give expression to our mind. Secondly, there are many idiomatic ways of saying things in Chinese. And it is extremely hard for us to put them into English properly.

       As far as I _22. ______________ (concern), my  23._____________(suggest) is that we should always have a notebook and a Chinese-English dictionary within easy reach. Whenever something beats us, we can first put it down in our notebook and then consult our dictionary. We can also turn to our English teacher for help, if necessary. In short, I believe that it is 24.___________ great use to keep a diary in English for 25.___ ________ development of our writing skills.

第二节 读写任务(共1小题,满分25分)

       阅读下面的短文,然后按照要求写一篇150词左右的英语短文。

   Nowadays we live in a global village, and many difficulties will arise if we can’t express ourselves fluently in English.

   In spite of my awareness of its importance,I seldom find chances to practice and improve my oral English.So,I am still very weak with regard to this respect.One reason is that my pronunciation and intonation aren’t good enough.The other is that I am so shy that I am always too nervous to find other exact words to express my ideas and feelings.As a result the best way for me to do is to remain silent when others are practicing and making great progress in their oral English every day.

   Now I am attaching much more importance to oral English and I have made up my mind to seize every opportunity to parctice. I begin to participate activities,such as going to “English Corners”,talking in English with my classmates and with native speakers. “Nothing is difficult in the world if you really put your heart to it.”as the Chinese saying goes.If I can build up my confidence,if I am not afraid of losing face any more,if I really work hard on it,I am sure my oral English will be excellent someday

       【写作内容】

  1.以约30个词概括短文的要点;

  2.然后一120个词写一篇英语短文谈谈广东高考英语口试对你口语练习造成的影响,并包括如下要点:

 (1)你以前对英语口语的态度及原因;

 (2)广东高考英语口试对你目前英语口语练习造成的某些影响;

 (3)你的感想或期望。

       【写作要求】

  1.作文中可使用自己的亲身经历或虚构的故事,也可以参照阅读材料的内容,但不得直接引用原文中的句子;标题自定。

  2.作文中不能出现真实姓名和学校名称。

       [评分标准]     概括准确,语言规范,内容合适,语篇连贯。

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