在同学们快要托福考试的时候对于托福考试的内容是不是还是没有把握，那么托福机经来助阵，帮助大家缩小备考内容，划出重点，让大家的考前突击复习更加有效果。和出国留学网小编一起来看看2018年5月6日托福阅读机经。

　　考古类

　　Environmental Impact of the Anasazi

　　The Collapse of the Mays

　　The Chaco Phenomenon

　　科学类

　　The Birth of Photography

　　Early American Printing Industry

　　农业类

　　Agricultural Society in Eighteenth- Century British America

　　Water Management in Early Agriculture

　　社会类

　　Population Growth in Nineteenth-Century Europe

　　Hunting and the Setting of Inner Eurasia

　　生物类

　　Extinctions at the End of the Cretaceous

　　The Cambrian Explosion

　　The Extinction of the Dinosaurs

　　How Animals in Rain Forests Make Themselves Heard

　　Sociality in Animals

　　Dinosaurs and Parental Care

　　Habitat Selection

　　Temperature Regulation in Marine Organisms

　　Cell Theory

　　Poikilotherms

　　Forest Succession

　　The Role of Diapause

　　The Identification of the Genetic Material

　　How Plants and Animals Arrived in the Hawaiian Islands

　　Constraints on Natural Selection