第6部分：完型填空　（建议在１５钟以内完成）
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案，并涂在答题卡相应的位置上。

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．—Buy 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 20一40 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．一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．—Check 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．一  _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．— 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．—The cheapest and most energy—efficient 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_．

词汇：
dioxide／n．二氧化物
insulate／adj．隔热
thermostat／n．温度自动调节器
rating／n．等级级别
timer／n．定时器
fluorescent／adj．荧光的 
blind／n．百叶窗

1．  A) unlikely        B)largely    C)tremendously     D)vastly
2．  A) tool            B)factor        C)fact              D)situation
3．  A) prize            B)label        C)cost              D)position    
4．  A) carry            B)bring        C)change            D)return
5．  A) phone        B)water        C)food              D)energy
6．  A) less            B)most        C)rarely             D)seldom
7．  A) Moreover    B)However   C)Therefore          D)So
8．  A) corrected        B)changed   C)set              D)repaired
9．  A) comfortable      B)common   C)convenient        D)dramatic
10． A) Turn over        B)Turn on    C)Turn off          D)Turn out
11． A) decorating    B)using        C)repairing        D)leaving
l 2． A) station        B)resources   C)supply          D)shortage
13． A) bright        B)cloudy        C)hot              D)dark
14． A) air            B)rain        C)wind          D)sunlight
15． A) layers        B)levels        C)degrees          D)points