Save Energy at Home
On the average，Americans waste as much energy as twothirds of the worlds population consumes Thats largely the of driving inefficient Cars，using inefficient appliances，and living and working in poorly insulatedbuildings.Then what canyou do to the situation?
Buy energy-efficient productsBuy new appliances or electronics of the highest energyefficiency rating.New energy-efficient models may cost more initially，but have a lowerOperating over their lifetimes The most energyefficient modelsthe Energy Star label，which identifies products use 20-40 percent less energy than standard new products According to the EPA，the typical American household Can save about$400 per year in bills with products that carry the Energy StarSwitch to compact fluorescent bulbs-Change the three bulbs you use in your house to compact fluorescents Each compact fluorescent bulb willkeep half a ton of CO2 out of the air its 1ifetime. ，compactfluorescent bulbs last ten times as long and Can save$30 per year in electricity costs.
Set heating and cooling temperatures correctlyCheck thermostatsin your home to make sure they areat a level that doesnt waste energy
Turn off the lights Turn off lights and other electrical appliances such as televisions and radios when youre notthem.Install automatic timers for lights that people in your house frequently to turn them off when leaving a room.Let the sun shine inThe cheapest and most energy--efficient light and heat source isoften right outside your window.On days，open blindsto let the sun light your home for free.Also remember that entering a room equals passive solar heating.Even on cold winter days，sun streaming into a room can raise the temperature by several .
51 A power
B result
C way
D work
S2 A improve
B create
C face
D explain
53 A speed
B system
C cost
D profit
54 A carry
B bring
C take
D give
55 A where
B while
C that
D since
56 A phone
B water
C food
D energy
57 A less
B most
C rarely
D seldom
58 A about
B with
C on
D over
59 A Moreover
B However
C Therefore
D so
60 A correct
B turned
C set
D reduced
6l A covering
B using
C repairing
D leaving
62 A want
B have
C try
D forget
63 A bright
B rainy
C foggy
D dark
64 A air
B rain
C wind
D sunlight
65 A 1ayers
B levels
C degrees
D points