官方真题Official5托福阅读词汇真题练习——afford&offer

小站整理2015-12-09 11:08:50

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摘要：通过训练，我们可以大大的提升答题的准确率，这对于一些时间不够的考生来说，也许是个福音。但是要如何训练托福阅读呢？小编在此整理了官方真题Official5托福阅读词汇真题练习，帮助广大考生提升托福阅读的正确率。

在托福阅读备考的练习中，想要快速的提升自己的托福阅读能力，除了不断的累积自己的词汇和句型之外，从官方真题Official练习入手也不失为一个不错的方法。那么，在以下内容中，我们就为大家带来官方真题Official5托福阅读词汇，希望能为大家托福阅读备考带来帮助。

Paragraph 5: Scientists have known for some time that certain plants, called hyperaccumulators, can concentrate minerals at levels a hundredfold or greater than normal. A survey of known hyperaccumulators identified that 75 percent of them amassed nickel, cobalt, copper, zinc, manganese, lead, and cadmium are other minerals of choice. Hyperaccumulators run the entire range of the plant world. They may be herbs, shrubs, or trees. Many members of the mustard family, spurge family, legume family, and grass family are top hyperaccumulators. Many are found in tropical and subtropical areas of the world, where accumulation of high concentrations of metals may afford some protection against plant-eating insects and microbial pathogens. 【官方真题Official5- Minerals and Plants】