As her record plainly , Wyler is one of the world's all-time great players. A.turnsB.showsC.appearsD.looks 题目和参考答案——青夏教育精英家教网—

      Solar electric systems pay off most quickly for consumers who use a lot of energy because extra
charges are given for heavy use, but the solar system still makes sense for low-energy users such as
myself.
     So much of Americans' carbon footprint results from buildings-about 43%, according to the U.S.
Department of Energy. I'm in a household of 1.5 (mom and 7-year-old), and we use only about 4
kilowatt hours of electricity per day, something we've managed through behavioral changes, such as
turning off the lights in rooms after we've exited, and through in-home efficiencies (效率), such as
swapping out all my light bulbs for energy-saving ones and using power boards that can turn off DVD
players, coffee makers and other electrical equipment.
     Using less electricity means I can get by with a smaller, less expensive solar system that not only
covers my use but also produces a credit on my power bill. Going solar also meant my house was
upgraded with a time-of-use meter. This type of meter allows me to receive credit for the electricity I
produce during peak hours when electricity costs the most, but pay the least for the electricity during
off-peak hours, when I recharge my cell phone and laptop and perform other tasks requiring power.
     The downsides are that I am tied in to the grid (电网) and still affected by power failure, and I now
have solar panels (太阳能电池板) that need to be cleaned. It's a subject of debate, but REC Solar said
dirty panels decrease energy production by 6% to 8%.Many panel producers recommend cleaning
panels at least once during the summer. I wash mine whenever they look dirty or dotted with bird
droppings, which is about every other week.
     I think $6,000 is a small price to pay, not only for panels that should produce my next 20 years of
electricity, but also for the greenhouse gases I'm not creating.

As her record plainly ________, Wyler is one of the world's all-time great players.

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