雅思考试主要是通过对考生听、说、读、写四个方面英语能力的考核，综合测评考生的英语沟通运用能力，实现“沟通为本”的考试理念。对于雅思考生来说，也有很多考试难点和政策盲区需要帮助解答。今天雅思无忧网小编准备了文章雅思阅读练习之使用杀虫剂的弊端，希望通过文章来解决雅思考生这方面的疑难问题，敬请关注。
阅读段落
One glaring disadvantage of pesticides' application is that, while destroying harmful pests, they also wipe out many useful non-targeted organisms, which keep the growth of the pest population in check. This results in what agroecologists call the 'treadmill syndrome'. Because of their tremendous breeding potential and genetic diversity, many pests are known to withstand synthetic chemicals and bear offspring with a built-in resistance to pesticides.
段落大意
本段介绍了使用杀虫剂的明显弊端：杀死了抑制害虫的生物;害虫抵抗化学制品。
阅读笔记
Disadvantage of pesticides' application:
Wipe out useful non-targeted organisms(control growth of pest)→ 'treadmill syndrome'
Tremendous breeding potential + genetic diversity→withstand synthetic chemicals & bear offspring with built-in resistance
逻辑关系
1. 因果(逻辑连接词: BECAUSE OF)
Their tremendous breeding potential and genetic diversity.
Many pests are known to withstand synthetic chemicals and bear offspring with a built-in resistance to pesticides.
(编辑：罗伟)
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