英語專四聽寫模擬練習：危機

英語專四聽寫模擬練習：危機

Crisis

Life is a contest! Who will win? A bluebird and sparrow both compete for space to build their nests. A fast-growing maple tree and slower-growing dogwood compete for the sunlight they both need. Oil competes with coal and nuclear power as an energy source for electric power plants!

There is a problem. There is a limited amount of space for birds, sunlight for trees, and energy for people! If we do not cut back on our uses of some of our resources, someday they will be gone!

How can we use energy today and know we will have enough to go around in the future? We can choose alternate, or replacement, energy resources. It takes the earth millions of years to create coal, oil, and gas. They are nonrenewable resources.

Solar energy, wind energy and water energy are renewable resources. It takes the earth millions of years to create coal, oil, and gas. They are nonrenewable resources.

Solar energy, wind energy and water energy are renewable. What other ways can we conserve our sources? How can we make sure there is always enough to go around?

Useful words and expressions:

bluebird 藍知更鳥

sparrow 麻雀

dogwood 山茱萸

power plant 發(fā)電廠，發(fā)電站

alternate 替換物

nonrenewable resources 不可再生資源

conserve 保存，保藏 來