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At Dallas/Fort Worth Airport, the lights are controlled by sensors that measure sunlight. They dim immediately when it's sunny and brighten when a passing cloud blocks the sun.
A wall of windows at a University of Pennsylvania engineering building has built-in blinds (百葉窗) controlled by a computer program that follows the sun's path.
Buildings are getting smarter -- and the next generation of building materials is expected to do even more.
Windows could catch the sun's energy to heat water. Sensors that measure the carbon dioxide breathed out by people in a room could determine whether the air conditioning needs to be turned up.
Many new materials and technology have been designed in the last 15 years. They now being used in a wave of buildings designed to save as much energy as possible. They include old ideas, like "green roofs," where a belt of plants on a roof helps the building keep heat in winter and stay cool in summer, and new ideas, like special coating for windows that lets light in, but keeps heat out.
As technologies such as sensors become cheaper, their uses spread.
The elevators (電梯) at Seven World Trade Center, which is under construction in New York, use a system that groups people traveling to nearby floor into the same elevator, thus saving elevator stops. People who work in the building will enter it by swiping (刷) ID cards that will tell the elevators their floor; readouts will then tell them which elevator to use. The building also has windows with a coating that blocks heat while letting in light.
More new building materials and technology are in development. A Philadelphia building firm is now working on "smart wrap" that uses tiny solar collectors to catch the sun's energy and transmitters (傳輸器) the width of a human hair to move it. They are expected to change the face of the construction industry in the next ten years or so.
72. ______ will be developed and used in the construction industry.
A. "Green roofs" that cool or heat buildings
B. "Smart wrap" that catches the sun's energy
C. Sunlight-measuring sensors that control lights
D. Window coating that lets light in, but keeps heat out      
73. The elevators at Seven World Trade Center are special because they can ___
A. send people to floors with fewer stops
B. teach people how to use their ID cards
C. make people stay very cool in summer
D. help people go traveling in the building               
74. The underlined word “it” in the last paragraph refers to _____.
A. a human hair                  B. smart wrap
C. the sun's energy             D. a transmitter         
75. What might be the most suitable title for the text?
A. Buildings Are Becoming Smarter
B. Buildings Are Getting More Sunlight
C. Buildings Are Lacking in Much Energy
D. Buildings Are Using Cheaper Materials

72---75   BACA 

72.解析：這是一道細節(jié)推斷題。根據(jù)最后一段中“A Philadelphia building firm is now working on ‘smart wrap’ that uses tiny solar collectors to catch the sun’s energy and transmitters the width of a human hair to move it. They are expected to changes the face of the construction industry in the next ten years or so.”可判斷出收集太陽能的Smart wrap將被發(fā)展用于建筑工業(yè)中。
73.解析：這是一道細節(jié)推斷題。根據(jù)倒數(shù)第二段“The elevators at Seven World Trade Center，which is under construction in New York，use a system that groups people traveling to nearby floors into the same elevator，thus saving elevator stops.”可推斷出在Seven World Trade Center所使用的電梯特殊的原因是它可使電梯停的次數(shù)減少。
74.解析：這是一道所指題。根據(jù)上文可推測出it指的是太陽能。
75.解析：這是一道主旨題。這篇短文主要講述了樓房的建筑采用了節(jié)約能量的方法，使樓房的建筑更加神奇。
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D
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第三部分閱讀理解（共20小題；每小題2分，滿分40分）  
A
Forests have always been useful and important to man who make use of them in many ways. Every day trees are serving man everywhere. Trees supply man with fruits and building materials in the form of wood, without trees it would be impossible to build houses, boats, bridges and so on. Furniture such as desks, chairs and beds is made of wood, trees can stop man from terrible heat. They're also useful in preventing good and rich top soil from being washed away during heavy rains.
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