用方框中所给单词的适当形式填空，使短文通顺、正确、连贯(每个单词限用一次)。
something, not, tree, simply, spend, you, why,
that, they, if, little, go, in, on, protect |
The Earth needs a helping hand
The Earth is getting warmer because of the activities of people. We cut down and burn 1______ and
send gases into the air with our cars and factories. Can we do anything about it? Sure. We may 2______
be leaders or scientists but we can play our part in 3______ the planet. Here are two ideas.
Bike, don't ride to school
Do you 4______ to school by bus or by bike? If you bike, you are doing 5______ for the Earth. Buses,
cars, trains and planes produce a lot of carbon dioxide (二氧化碳). If you live near to your school, 6______
not bike there on warm spring mornings? Or, you can 7______ walk to school to save energy.
Wash the green way
Do you help your mom and dad wash clothes? Then wash them 8______ an energy-saving way. A recent
study by Cambridge University found 9______ 60 percent of the energy used on a piece of clothing is
10______ in washing and drying it. Over ita lifetime, a T-ahirt can send up to 4 kilograms of carbon dioxide
into the air.
11______ you wash your own clothes, wash them in cold or warm water to save energy, but not hot water.
Wash your clothes when 12______ fill up the machine. Use the most energy-saving machine you can find.
Some new ones use as 13______ as one-fourth of the energy of older machines. When they're clean, dry
14______ clothes the natural way, by hanging them 15______ a line rather than putting them in a dryer. In all,
you can cut the carbon dioxide used in washing by 90 percent.