TF阅读真题第921篇The Greenhouse Effect on Venus

TF阅读真题第920篇Animal Migration Patterns in the Serengeti

TF阅读真题第919篇Building Materials in the Nineteenth Century

TF阅读真题第918篇Dating Archaeological Objects

TF阅读真题第917篇Extraterrestrial lmpact and Megafauna Extinctions

TF阅读真题第916篇New World and Old World Primates

TF阅读真题第915篇lron Working in Africa

TF阅读真题第914篇Agriculture and the classic Maya Collapse

TF阅读真题第913篇Chimpanzee Communication

TF阅读真题第912篇The Nabis