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What pollute the earth’s atmosphere naturally? ______and gases from volcanoes pollute the earth’s atmosphere naturally.
What pollute the earth’s atmosphere naturally? ______and gases from volcanoes pollute the earth’s atmosphere naturally.
admin
2012-04-01
28
问题
What pollute the earth’s atmosphere naturally? ______and gases from volcanoes pollute the earth’s atmosphere naturally.
Sandstorms and dust and gases from volcanoes pollute the earths atmosphere naturally. But the most serious kind of air pollution comes from people. (12) Factories and power stations exhaust harmful gases into the air, contributing to global warming. On a much smaller scale, air pollution causes all sorts of breathing problems. (13) People could reduce air pollution by saving energy and reducing harmful emissions from power stations.
Air pollution is at its worst over big cities where millions of people live, work and travel about in cars, buses, and trucks. Factory can be fitted with devices to cut down air pollution, but this is expensive. (15) If better public transport and cycle lanes were available in towns and cities, people would be less likely to use their cars, reducing the overall amount of pollution accordingly.
选项
答案
reducing harmful emissions
解析
本题询问人们可以做什么来减轻空气污染。根据People could reduce air pollution by saving energy and reducing harmful emissions from power stations可知,人们可以通过节约能源和减少来自发电站的有害物质排放来减轻空气污染。
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大学英语三级A级题库大学英语三级分类
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大学英语三级
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