練習(xí)：
1． Which of the following statements does not indicate the importance of windows
as described in the first two paragraphs?
A Windows can change from clear to dark to save energy．
B Windows help to save energy by letting light in．
C Windows help to save energy by providing heat．
D Windows enable people to have contact with the outside world．
2． When are windows the weak link in a building?
A In the cold winter．
B In the hot summer．
C When air conditioners are turned on．
D Both A and B．
3． What are smart windows，according to Paragraph 4?
A Windows that are coated．
B Windows that are glazed．
C Windows the color of which can be changed．
D Windows that have many layers．
4． To make electrochromic windows change color，what is applied to the window glass?
A Electricity．
B Tungsten oxide．
C A battery．
D A voltage．
5． What will he the benefit if the research on smart windows turns out to be successful，according to the last paragraph?
A The buildings will look different．
B Windows can be as large as you want．
C We may not need air conditioners any more．
D They are less expensive than traditional windows．
答案與題解：
1． A 第一段告訴我們窗戶因?yàn)樽岅?yáng)光進(jìn)入房間，并且為房間提供熱源，所以節(jié)約了能源。第二段說(shuō)，窗戶使人們能接觸外部世界。所以B、C和D都說(shuō)明了窗戶的重要性。第一段最后一句說(shuō)，研究者正在實(shí)驗(yàn)?zāi)茏尨皯糇儞Q亮度，但并沒有說(shuō)已經(jīng)實(shí)驗(yàn)成功，所以A是錯(cuò)誤的說(shuō)法，是正確選擇。
2． D 短文第三段的第一句說(shuō)：windows are the weak link in a building，接下來(lái)是對(duì)這句話分寒冬和炎夏做了說(shuō)明。所以D是正確選擇。
3． C 第四段告訴我們，多年來(lái)，科學(xué)家已研究出多種通過(guò)窗戶節(jié)能的辦法，而smart windows 使用的技術(shù)使窗戶能變換顏色。所以C是正確選擇。
4． B 第五段第二句提供了答案。a sheet of glass coated with thin layers of chemical compound such as tungsten oxide中的coated是“涂上一層薄薄的……”的意思。
5． C 短文最后一段的第五句提供了答案。
1． Which of the following statements does not indicate the importance of windows
as described in the first two paragraphs?
A Windows can change from clear to dark to save energy．
B Windows help to save energy by letting light in．
C Windows help to save energy by providing heat．
D Windows enable people to have contact with the outside world．
2． When are windows the weak link in a building?
A In the cold winter．
B In the hot summer．
C When air conditioners are turned on．
D Both A and B．
3． What are smart windows，according to Paragraph 4?
A Windows that are coated．
B Windows that are glazed．
C Windows the color of which can be changed．
D Windows that have many layers．
4． To make electrochromic windows change color，what is applied to the window glass?
A Electricity．
B Tungsten oxide．
C A battery．
D A voltage．
5． What will he the benefit if the research on smart windows turns out to be successful，according to the last paragraph?
A The buildings will look different．
B Windows can be as large as you want．
C We may not need air conditioners any more．
D They are less expensive than traditional windows．
答案與題解：
1． A 第一段告訴我們窗戶因?yàn)樽岅?yáng)光進(jìn)入房間，并且為房間提供熱源，所以節(jié)約了能源。第二段說(shuō)，窗戶使人們能接觸外部世界。所以B、C和D都說(shuō)明了窗戶的重要性。第一段最后一句說(shuō)，研究者正在實(shí)驗(yàn)?zāi)茏尨皯糇儞Q亮度，但并沒有說(shuō)已經(jīng)實(shí)驗(yàn)成功，所以A是錯(cuò)誤的說(shuō)法，是正確選擇。
2． D 短文第三段的第一句說(shuō)：windows are the weak link in a building，接下來(lái)是對(duì)這句話分寒冬和炎夏做了說(shuō)明。所以D是正確選擇。
3． C 第四段告訴我們，多年來(lái)，科學(xué)家已研究出多種通過(guò)窗戶節(jié)能的辦法，而smart windows 使用的技術(shù)使窗戶能變換顏色。所以C是正確選擇。
4． B 第五段第二句提供了答案。a sheet of glass coated with thin layers of chemical compound such as tungsten oxide中的coated是“涂上一層薄薄的……”的意思。
5． C 短文最后一段的第五句提供了答案。