Tidal Heating on lo     To understand tidal heating, we must go back to when the twin spacecraft Voyager 1 and Voyager 2 made close flybys of the moon lo, Jupiter's clos...

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...

TF阅读真题第848篇Wool production in Europe on the high Middle Ages

Mycorrhizae     Fungi are organisms, including mushrooms, yeasts, and molds, that absorb and decompose organic material. Most land plants have specialized roots that con...

The Greenhouse Effect on Venus   The nitrogen and oxygen gases that make up the bulk of Earth's atmosphere neither absorb nor emit thermal radiation, energy that is released f...

Archaeological Evidence for Social Complexity   题目：     Ancient human groups that used advanced technology and divided labor into highly specialized roles are c...

Agriculture and the classic Maya Collapse       The Classic Maya civilization, which flourished in the lowlands of what is now southern Mexico and Central America ...

Human Responsibility for Megafaunal Extinctions     Paleontologists are intrigued by the question of what caused a diverse group of large animals (megafauna) to become e...

  Part 2 You should spend about 20 minutes on Questions 14-26, which are based on Reading Passage 2 below. Return of the elm: reintroducing the beloved tree to Britain Mar...

TF阅读真题第808篇Effects of Plate Tectonics on Species