2. 外语
  3. Environmental pollution is a term that refers to ail the ways by which humans pollute their 【B1】______ . We also pollute our sur

Environmental pollution is a term that refers to ail the ways by which humans pollute their 【B1】______ . We also pollute our sur

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问题     Environmental pollution is a term that refers to ail the ways by which humans pollute their 【B1】______ . We also pollute our surroundings in various other ways. People 【B2】______ natural beauty by 【B3】______ junk and litter on the land and in the water. They operate machines and motor vehicles that fill the air with dangerous 【B4】______ and disturbing noise.
    Environmental pollution is one of the most serious problems that 【B5】______ faces today. Air, water, soil are necessary to the 【B6】______ of ail living things. Badly polluted air can cause illness and even death. Polluted water kills fish and other marine life. Pollution of the soil 【B7】______ the amount of land on which we can 【B8】______ food. 【B9】______ .
    Everyone wants to reduce pollution. But the pollution problem is as complicated as it is serious. 【B10】______ . For example, exhaust from automobiles causes a large percentage of ail air pollution. But the automobile provides transportation for millions of people. 【B11】______ .
【B10】
选项
答案It is complicated because so much pollution is caused by things that benefit people
解析
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