求关于环境污染的英语演讲稿pollution and your suggestion to redu it2 what should studengs do to help protect our environment from being seriously polluted3 what do you think of students' holding part-time jobs?
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求关于环境污染的英语演讲稿pollution and your suggestion to redu it2 what should studengs do to help protect our environment from being seriously polluted3 what do you think of students' holding part-time jobs?
求关于环境污染的英语演讲稿
pollution and your suggestion to redu it
2 what should studengs do to help protect our environment from being seriously polluted
3 what do you think of students' holding part-time jobs?
求关于环境污染的英语演讲稿pollution and your suggestion to redu it2 what should studengs do to help protect our environment from being seriously polluted3 what do you think of students' holding part-time jobs?
our environment is polluted by many pollutants.the gases emitted from factories and the exhaust pipes of automobiles pollute the air.besides,the use of chemical substances in agriculture leaves poisonous residues in the tissues of roganisms.garbage cast out by people is left to accumulate in unsanitary heaps which attract flies and give off bad smells.
these pollutants endanger public health.once they have entered the environment,they are hard to get rid of.as people have to breathe,eat and drink them,they directly of indirectly affect bodily functions and cause many infectious diseases.
the pollution problem will be solved only with the help of modern science and technology,we should take steps to clear away the sources of pollution and establish a set of regulations to keep our environment free from pollution.
解决方法还可以说靠宣传教育群众,政府制定法律法规,这些你自己想想吧