4. Air Pollution
Air pollution is one of the major problems of the modern world. A great deal of energy is needed to run the factories of modern industrial nations. Automobile, trains, planes and busses need energy, too. Nearly all of this energy is produced by burning fuels. The burning produces wastes, some of which remain in the air, causing air pollution. Scientists are finding ways to stop air pollution especially in big industrial areas and densely-populated cities. They are studying new ways of generating electricity that may be less damaging to the environment. In the meantime, many power plants are being modernized to give off less polluted material. Also, engineers try to design and locate new power plants to do minimum damage to the environment. However, it may be that we still have a long way to go before we have a clean world. Nearly all of the countries are trying hard to prevent and control air pollution. There indeed seems to be no end to tasks that environmentalists will be required to do. People will continually find new ways to control pollution.
the + 最高级 + 比较范围
以a-开头的形容词用法新探 • afraid
以a-开头的形容词用法新探•alight
以a-开头的形容词用法新探·amiss
谈谈teach sb to do sth的引申翻译
surprising作定语与surprise作定语有何区别
以a-开头的形容词用法新探·awake
以a-开头的形容词用法新探·adrift
用形容词表示类别和整体
cost,pay,spend用法“五辨”
形容词与副词的比较级
动词allow搭配小议
以a-开头的形容词用法新探•ajar
兼有两种形式的副词
以a-开头的形容词用法新探·astir
many,old 和 far
以-ly结尾的常见形容词
以a-开头的形容词用法新探•aflutter
以a-开头的形容词用法新探·alive
英语语法-形容词和副词配套练习及答案
多个形容词修饰名词的顺序
以a-开头的形容词用法新探•akimbo
以-ly结尾的形容词
以a-开头的形容词用法新探·alone
比较级形容词或副词 + than
以a-开头的形容词用法新探·aflame
和more有关的词组
as + 形容词或副词原级 + as
以a-开头的形容词用法新探 • aghast
以a-开头的形容词用法新探•afoot
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