Degradation and Erosion of Soil Land without soil can support only very small primitive plants such as lichens and mosses that can cling onto a rock surface. The rest of the worl...

Horns in Beetle Competition       Intraspecific competition-that is, competition between members of the same species for limited resources-can be a complex phenome...

  题目： Living-History Museums in the United States       The living-history approach to teaching social history combines restored or re-created historical ...

  题目： French Gothic Cathedrals Gothic-style cathedrals, known for their impressive height. pointed arches, and intricate line patterns, are among the most elaborate s...

TF阅读真题第799篇Surviving as a Conifer

TF阅读真题第854篇Why Did Social stratification Emerge

综合写作： 写作真题第211套（rs131）听力音频 https://mp.weixin.qq.com/s?__biz=MzI2NzA4MDMwNA==&mid=2247522620&idx=1&sn=b22ce9d87c87604c87bfccc268a2d54a&scene=21#we...

听力音频： 口语第200套（zt031） https://mp.weixin.qq.com/s/VZKj1UaJ6n_3cXO8pM_KOA Task1 Many regions in the world face problems with air pollution. What can be done to decrea...

综合写作： 写作真题第188套（rs108）听力音频 https://mp.weixin.qq.com/s?__biz=MzI2NzA4MDMwNA==&mid=2247522469&idx=5&sn=9ed7ec7b8d6720270200d157291ad1ac&scene=21#we...

PART 1 READING PASSAGE 1 You should spend about 20 minutes on Questions 1-13, which are based on Reading Passage 1 below. THE BAOBAB TREE The baobab tree is an icon of the African...