智课网TOEFL备考资料托福TPO21综合写作内容解读 摘要: 托福综合写作部分考察学生阅读、听力、写作三方面的内容,内容的形式,往往是让学生阅读一篇小文章,文章的观点与听力所听到的观点是相反的,然后根据自己听到的和阅读到的内容写一篇英文文章,难度系数有点大,下面我们就先来那这篇文章练练手吧! 托福 TPO21综合写作精讲: 托福TPO21综合写作 阅读材料: Genetic modification, a process used to change an organism s genes and hence its characteristics,is not being used to improve trees. Through genetic modification, it is possible to create trees that produce more fruit, grow faster,