Тест. найдите правильный ответ1. There is ___ acid in ordinary rain.a) alwaysb) noc) strong2. Acid rain ____a) appeared in the 20th centuryb) has always existed in naturec) is the result of industrial development3. ____ is the cause of acid rain.a) burning coal and oilb) the windc) water in the air4.A lot of trees have died in Canada because____a) ecological laws of the countryb) of the power stations and factoriesc) animals cannot live in polluted environment5.Acid rain badly influences_____a) only our faunab) only our florac) our habitats6.People_____clean the smoke from factories and power stations.a) are able tob) do not know how toc) should invent methods to.

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