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一、请把下列一组迫切需要解决的环境问题按程度逐一排序,用数字“1”～“5”表示,“1”为最迫切,“5”为最不迫切,并说明理由。校办工厂排放烟尘--------( )近海水域出现“赤潮”------( )家庭生活和汽车造成的噪声污染-----( )饮用水中含有细菌和重金属----( )垃圾形成了
First, please rank the following groups of urgently-addressed environmental issues one by one. Use the numbers “1” to “5” to indicate that “1” is the most urgent and “5” is the least urgent, and explain the reasons. School-operated factories emit smoke dust--------() Red tides in coastal waters ------() Noise pollution caused by family life and cars -----() Drinking water contains bacteria and Heavy Metal ---- () Garbage formed