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A Some environmentalists are against the project on biological grounds£®
B What do the world¡¯s longest bridges have in common?
C If true£¬one day you might spy the beast while zipping(ºôÐ¥¶ø¹ý)across the Messina Strait Bridge£®
D They¡¯re what will keep the bridge from going anywhere£®
E The second job will be to pull two sets of steel cables across the strait£¬each set being a bundle of 44,352 individual steel wires£®
F They will tip up the scales at 166,500 tons¡ªmore than half the bridge¡¯s total mass£®
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Save Energy at Home
On the average£¬Americans waste as much energy as two-thirds of the world¡¯s population consumes£®That¡¯s _1_ the result of driving inefficient cars£¬using inefficient appliances£¬andliving and working in poorly insulated buildings£®Then what can you do to improve the _2_ ?
Buy energy-efficient products£®¡ªBuy new appliances or electronics of the highest energy-efficiency rating£®New energy¡¤efficient models may cost more initially£¬but have a lower operating _3_ over their lifetimes£®The most energy-efficient models _4_ the Energy Star label£®which identifies products that use 20Ò»40 percent less energy than standard new products£® According to the EPA£¬the typical American household can save about$400 per year in _5_ bills with products that carry the Energy Star£®
Switch to compact fluorescent bulbs£®Ò»Change the three bulbs you use _6_ in your house to compact fluorescents3£®Each compact fluorescent bulb will keep half a ton of carbon dioxide out of the air over its lifetime£® _7_ £¬compact fluorescent bulbs last ten times as long and can save$30 per year in electricity costs£®
Set heating and cooling temperatures correctly£®¡ªCheck thermostats in your home to make sure they are _8_ at a level that doesn¡¯t waste energy£®Get an electronic thermostat that will allow your furnace to heat the house to a lower temperature when you¡¯re sleeping and retum it to a more _9_ temperature before you wake up£®
Turn off the lights£®Ò» _10_ lights and other electrical appliances such as televisions and radios when you¡¯re not using them£®Install automatic timers for lights that people in your house frequently forget to turn them off when _11_ a room£®
Choose renewable energy£®¡ª Many consumers can now choose their energy supplier£®If you have a choice£¬choose an electric utility that uses renewable power _12_ £¬such as solar, water or wind£®
Let the sun shine In£®¡ªThe cheapest and most energy¡ªefficient light and heat source is often right_outside your windows£®On _13_ days£¬open blinds to let the sun light¡¯your home for free£®Also remember that _14_ entering a room equals passive solar heating£®Even on cold winter days£¬sun streaming into a room Can raise the temperature by several _15_£®
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