閱讀下面的短文。每篇短文的后面有五個問題，每個問題有四個備選答案。請根據短文的內容選擇最佳答案。每個試題計3分,共計15分。

　　Windows not only let light in to cut down an electricity use for lighting，but the light coming through the window also provides heat.However，windows are not something people typically associate with being a cutting edge1 technology.Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between with a flip of a switch2.

　　Yet，windows are the weak link in a building when it comes to energy and temperature control.In the winter，cold air leaks in.When its hot and sunny，sunlight streams in.All of this sunlight carries lots of heat and energy.And all of this extra heat forces people to turn on

　　Windows have been a major focus of energy research for a long time. Over the years，scientists have come up with a variety of strategies for coating，glazing，and layering windows to make them more energy efficient.Smart windows go a step further.They use chromogenic technologies which involve changes of color.

　　One important feature that makes a smart window so smart is that it has a sort of memory. All it takes is a small jolt of voltage to turn the window from one state to the other.Then，it stays that way.Transitions take anywhere from 10 seconds to a few minutes，depending on the size of the window.The development of smart windows could mean that massive air conditioning systems may no longer need.In the future, Granqvist says,our buildings may look different.

　　flipn. v.用手指輕彈，輕擊 tungsten oxide 氧化鎢

　　refreshingadj.使人清爽的 electrochromic adj.電致變色的

　　chromogenic adj.發色的 air conditioning 空調，空調系統

　　1. cutting edge：本意為刃口，刀刃比喻意為最先進的，科技含量最高的。

　　3. Uppsala University in Sweden：瑞典的烏普薩拉大學。烏普薩拉是瑞典東部一座城市，位于斯德哥爾摩的西北方向。

　　1. Which of the following statements does not indicate the importance of windows as described in the first two paragraphs?

　　B Windows help to save energy by letting light in.

　　D Windows enable people to have contact with the outside world.

　　A In the cold winter.

　　C When air conditioners are turned on.

　　3. What are smart windows，according to Paragraph 4?

　　B Windows that are glazed.

　　D Windows that have many layers.

　　A Electricity.

　　C A battery.

　　5. What will he the benefit if the research on smart windows turns out to be successful，according to the last paragraph?

　　B Windows can be as large as you want.

　　D They are less expensive than traditional windows.

　　1. A 第一段告訴我們窗戶因為讓陽光進入房間，并且為房間提供熱源，所以節約了能源。第二段說，窗戶使人們能接觸外部世界。所以B、C和D都說明了窗戶的重要性。第一段最后一句說，研究者正在實驗能讓窗戶變換亮度，但并沒有說已經實驗成功，所以A是錯誤的說法，是正確選擇。

　　3. C 第四段告訴我們，多年來，科學家已研究出多種通過窗戶節能的辦法，而smart windows 使用的技術使窗戶能變換顏色。所以C是正確選擇。

　　5. C 短文最后一段的第五句提供了答案。

　　閱讀下面的短文。每篇短文的后面有五個問題，每個問題有四個備選答案。請根據短文的內容選擇最佳答案。每個試題計3分,共計15分。

　　Windows not only let light in to cut down an electricity use for lighting，but the light coming through the window also provides heat.However，windows are not something people typically associate with being a cutting edge1 technology.Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between with a flip of a switch2.

　　Yet，windows are the weak link in a building when it comes to energy and temperature control.In the winter，cold air leaks in.When its hot and sunny，sunlight streams in.All of this sunlight carries lots of heat and energy.And all of this extra heat forces people to turn on

　　Windows have been a major focus of energy research for a long time. Over the years，scientists have come up with a variety of strategies for coating，glazing，and layering windows to make them more energy efficient.Smart windows go a step further.They use chromogenic technologies which involve changes of color.

　　One important feature that makes a smart window so smart is that it has a sort of memory. All it takes is a small jolt of voltage to turn the window from one state to the other.Then，it stays that way.Transitions take anywhere from 10 seconds to a few minutes，depending on the size of the window.The development of smart windows could mean that massive air conditioning systems may no longer need.In the future, Granqvist says,our buildings may look different.

　　flipn. v.用手指輕彈，輕擊 tungsten oxide 氧化鎢

　　refreshingadj.使人清爽的 electrochromic adj.電致變色的

　　chromogenic adj.發色的 air conditioning 空調，空調系統

　　1. cutting edge：本意為刃口，刀刃比喻意為最先進的，科技含量最高的。

　　3. Uppsala University in Sweden：瑞典的烏普薩拉大學。烏普薩拉是瑞典東部一座城市，位于斯德哥爾摩的西北方向。

　　1. Which of the following statements does not indicate the importance of windows as described in the first two paragraphs?

　　B Windows help to save energy by letting light in.

　　D Windows enable people to have contact with the outside world.

　　A In the cold winter.

　　C When air conditioners are turned on.

　　3. What are smart windows，according to Paragraph 4?

　　B Windows that are glazed.

　　D Windows that have many layers.

　　A Electricity.

　　C A battery.

　　5. What will he the benefit if the research on smart windows turns out to be successful，according to the last paragraph?

　　B Windows can be as large as you want.

　　D They are less expensive than traditional windows.

　　1. A 第一段告訴我們窗戶因為讓陽光進入房間，并且為房間提供熱源，所以節約了能源。第二段說，窗戶使人們能接觸外部世界。所以B、C和D都說明了窗戶的重要性。第一段最后一句說，研究者正在實驗能讓窗戶變換亮度，但并沒有說已經實驗成功，所以A是錯誤的說法，是正確選擇。

　　3. C 第四段告訴我們，多年來，科學家已研究出多種通過窗戶節能的辦法，而smart windows 使用的技術使窗戶能變換顏色。所以C是正確選擇。

　　5. C 短文最后一段的第五句提供了答案。