很多考生会抱怨托福阅读时间不够，还没完全理解文章就做题，正确率不高。其实这是我们对托福阅读素材不熟悉造成的，下面小编整理了一下托福阅读考试最新的素材，希望能帮助大家更加快速高效的备考托福。

　　托福阅读素材：棉花机

　　第一段：棉花一直是人类重要的作物

　　第二段：早期社会将棉花的种子与纤维分开很困难，需要大量人工(有题)

　　第三段：美国人 Eli 发明了棉花机，来自动分离种子与纤维，并且发明了标准化生产的技术

　　第四段： Eli 本人没有受益于他的发明，因为他的机器很容易仿造，并且他卖的很贵(有题)

　　第五段： Eli 通过他耶鲁大学的学生会来 cultivate social and political connections,最后拿到了军方的合同来使用标准化生产制造武器

　　参考阅读：

　　From Wikipedia, the free encyclopedia

　　A cotton gin is a machine that quickly and easily separates cotton fibers from their seeds, allowing for much greater productivity than manual cotton separation. The fibers are then processed into various cotton goods such as linens, while any undamaged cotton is used largely for textiles including clothing. Seeds may be used to grow more cotton or to produce cotton seed oil.

　　Although simple handheld roller gins had been used in India and other countries since at earliest 500 AD, the first modern mechanical cotton gin was created by American inventor Eli Whitney in 1793 and patented in 1794. However, the Indian worm-gear roller gin, invented some time around the sixteenth century, has, according to Lakwete, remained virtually unchanged up to the present time. Whitney's gin used a combination of a wire screen and small wire hooks to pull the cotton through, while brushes continuously removed the loose cotton lint to prevent jams. It revolutionized the cotton industry in the United States, but also led to the growth of slavery in the American South as the demand for cotton workers rapidly increased. The invention has thus been identified as an inadvertent contributing factor to the outbreak of the American Civil War. Modern automated cotton gins use multiple powered cleaning cylinders and saws, and offer far higher productivity than their hand-powered forebears.

　　Eli Whitney's patent

　　The modern mechanical cotton gin was invented in the United States of America in 1793 by Eli Whitney (1765– 1825). Whitney applied for a patent on October 28, 1793; the patent was granted on March 14, 1794, but was not validated until 1807. Whitney's patent was assigned patent number 72X. There is slight controversy over whether the idea of the modern cotton gin and its constituent elements are correctly attributed to Eli Whitney. The popular image of Whitney inventing the cotton gin is attributed to an article on the subject written in the early 1870s and later reprinted in 1910 in The Library of Southern Literature. In this article, the author claimed Catherine Littlefield Greene suggested to Whitney the use of a brush-like component instrumental in separating out the seeds and cotton. To date, Greene's role in the invention of the gin has not been verified independently.