Water Pollution
Water is very important to us. Factories and plants need water for industrial uses and large pieces of farmland need it for irrigation. Without water to drink, people die in a short time.
Today most water sources are so dirty that people must purify water before drinking. Water seriously polluted, and the water is becoming unfit for drinking or irrigation. The same thing has also happened to our seas and oceans. So, the problem of water pollution is almost worldwide.
Scientists of many countries have done a lot of work to Sop pollution. The polluted water in some places has become clean and drinkable again. Perhaps one day the people in all towns and cities will be ' drinking clean water. That day, we believe, is not very far off. (161 words)
Part II
1-5BBDAB 6-10ACCDA 11-15CABBC 16-20ABCAD 21-25ACDDB 26-30ABADA
Part III
31-35BCCDC 36-40CBAAB 41-45ACCBD 46-50BBADA
Part IV
51-55BCACA 56-60CBDCA 61-65CCDBD 66-70BDDCB 71-75ADAAB 76-80DBBCD
Part V
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