2. 外语
  3. Earth is mentioned by the author as a necessity for hydroponics. One of the advantages of using hydroponics is increased pestic

Earth is mentioned by the author as a necessity for hydroponics. One of the advantages of using hydroponics is increased pestic

admin2012-09-10  76
问题 Earth is mentioned by the author as a necessity for hydroponics.
One of the advantages of using hydroponics is increased pesticides and herbicides.
选项 A、Right
B、Wrong
C、Not mentioned
答案B
解析 见最后一段第二句，句中提到：因为环境得到监控，除草剂 (herbicides)和杀虫剂(pesticides)都不必要使用，因而题中所说“无土栽培的一个优点是除草剂和杀虫剂的增加使用”显然是不对的。
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