日本东京大学生物实验室的科学家,借助一个偶然的发现,研制出了一种新型高效无毒杀虫剂,一天,工作人员发现一只苍蝇落到一些从深水坑中爬上来的蛆旁,不知为什么,只见苍蝇原地转了两圈,便死掉了,随之而来的一些蚊子、甲虫等也都是如此。这一现象引 A scientist at the Laboratory of Biology, University of Tokyo, Japan, developed a new type of highly effective and non-toxic pesticide by chance. One day, the staff found a fly fell to some maggots that had climbed up from a deep water pit. Why, I saw the flies turn around twice, they died, followed by some mosquitoes, beetles, etc. are also true. This phenomenon cited