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  3. Save Energy At Home On the average, Americans waste as much energy as two-th...

Save Energy At Home On the average, Americans waste as much energy as two-th...

admin2020-12-24  4
问题 Save Energy At Home
On the average, Americans waste as much energy as two-thirds of the world’s population consumes. That’s largely the_______ (51) of driving ineffticint cars, using inefficient appliances (设备)，and living and working in poorly insulated (隔热)buildings. Then what can you do to_______(52) the situation?
Buy energy-efficient products — btiy new appliances or electronics of the highest energy-efficiency rating. New energy-efficient models may cost more initially, but have a lower operating_______(53) over their lifetimes. The most energy-efficient models______
_______(54) the Energy Star label, which identifies products ______(55) use 20 - 40 percent less energy than standard new products. According to the EPA (美国环境保护署)，the typical American household can save about $400 per year in_______(56) bills with products that carry the Energy Star.
Switch to compact fluorescent bulbs (焚光灯)—change the three bulbs you use_______(57) in your house to compact fluorescents. Each compact fluorescent bulb will keep half a ton of C02 out of the air ______(58) its lifetime, ________(59)，compact fluorescent bulbs last ten times as long and can save $30 per year in electricity costs.
Set heating and cooling temperatures correctly —check thermostats (温度自动调节器) in your home to make sure they are _____ (60) at a level that doesn’t waste energy.
Turn off the lights — turn off lights and other electrical appliances such as televisions and radios when you’re not_______ (61) them. Install automatic timers for lights that people in your house frequently_______(62) to turn them off when leaving a room.
Let the sun shine in — the cheapest and most energy-afficient light and heat source is often right outside your window. On_______(63) days，open blinds (百叶窗)to let the sun light your home for free. Also remember that_______(64) entering a room equals passive solar heating. Even on cold winter days, sun streaming into a room can raise the temperature by several_______(65).
选项 A speed
B system
C cost
D profit
答案C
解析从意思上来讲，operating cost搭配在这里最合适。
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