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>更新时间：2011-02-07 22:04:49 |
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会员通道1
会员通道2
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| 简 介 |
A nation with as much industry as the United States need energy to 1 everything running. Energy means 2 . 3 is a form of energy. It makes electric lights, re-corders, TV sets and conditioners 4 . Petrol is 5 to power cars, planes and so on. Coal is another form of energy, 6 is used to heat many homes and factories and 7 electricity.
The United States is a land 8 in natural resources. Some of the resources, such as water, 9 and coal, has been used to produce enough energy the country l0 . But 11 the United States grows larger, it needs more and more 12 . Many people 13 now that the oil in the United States can’t 14 as much energy as the nation needs.
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