这是出现在雅思考试阅读部分Part3的中频真题，主题为Cargill Dow LLC研发玉米基环保塑料的商业案例研究。本篇包含事物信息匹配题、图表流程填空题、单/多选题三类主流雅思阅读题型，难度符合雅思阅读第三部分的考察标准。适合雅思考生备考时做专项训练，熟悉科技环保类文章的出题思路。
In the early 1990s, scientists at the US-based agricultural firm Cargtill achieved a technological breakthrough when they succeeded in converting corn, a natural, renewable resource, into a polymer (or plastic) suitable for a broad variety of applications. A dozen years ago, scientists at Cargill got the idea of converting lactic acid made from corn into plastic while examining possible new uses for materials produced from corn wet milling processes. In the past, several effo...
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