题目内容:
Howhassciencedonesomethingharmfultomankind? A.Becauseofscience,diseasescausedbypollutedfoodhavebeenvirtuallyeliminated.
B.Ithascausedalackofinformationconcerningthevalueoffood.
C.Becauseoftheapplicationofscience,somepotentiallyharmfulsubstanceshavebeenaddedtofood.
D.Thescientistshavepreservedthecolorofmeats,butnotofvegetables.
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答案解析: