air conditioning空调,空调系统
注释:
1.cutting edge:本意为:刃口,刀刃;比喻意为:最先进的,科技含量最高的。
2.anywhere in between with a flip of a switch:就在开或关的一霎那。
3.Uppsala University in Sweden:瑞典的乌普萨拉大学。乌普萨拉是瑞典东部一座城市,位于斯德哥尔摩的西北方向。
练习:
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.
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