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binhanbongcun2007
2 năm trước
Cho ba điểm M,N,Pko thẳng hàng. Vẽ đường thẳng d cắt đoạn thẳng MN,MP và ko đi qua M,N,P. Gọi tên hai nửa mặt phẳng đối nhau bờ d? Đoạn thẳng NP có cắt đường thẳng d ko
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scientists-pollution-serious-factories-exhaust-reduce-require-percentage everyone wants to reduce(1) but the pollution problem is as complicated as it is(2) it is complicated because much pollution is caused by things at benefit people for example(3) from automobiles causes large (4) of air pollution but the automobile provides transportation to millions people (5) discharge much of the material that pollutes air and water but factories give employment to a large number of people thus to end or greatly (6) pollution immediately people would have to stop using many things that benefit them most people do not want to do that of course but pollution can be gradually reduced in several ways(7) and engineers can work to find ways to lessen the amount of pollution that such things as automobiles and factories cause governments can pass and enforce laws that (8) businesses and individuals to stop or cut down on certain polluting activities questions 1)do things that benefit people bring about pollution? 2)is it complicated to reduce pollution? why or why not? 3)who can find ways to lessen the amount of pollution? 4)what can the government do to reduce pollution?

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