The main purpose of the first 3 paragraphs of the passage is to ______. A: prove that contaminants are harmful to health B: show that contaminants could affect the future generations C: describe some experiments made by toxicologists D: urge that pesticides should be abandoned
The main purpose of the first 3 paragraphs of the passage is to ______. A: prove that contaminants are harmful to health B: show that contaminants could affect the future generations C: describe some experiments made by toxicologists D: urge that pesticides should be abandoned
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