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TF阅读真题第764篇The Chemical Defenses of Trees
Woody plants produce a great variety of chemical compounds to provide protection against other plants, diseases, and herbivores (plant-eating animals) big and small. These chemical...
TF阅读真题第873篇Debating the Agricultural Diet
Debating the Agricultural Diet An affluent society is one in which resources are ordinarily not scarce and most society members have achieved a general level of econ...
TF阅读真题第903篇Life on Mars
Life on Mars Astronomers strongly suspect that Mars currently has no liquid water, diminishing the chances for life there now. But running water and a denser atmosphere in the pas...
TF阅读真题第938篇Deer and the Forests of Kinkazan
Deer and the Forests of Kinkazan 题目： The ancient beech forests of Kinkazan Island off the coast of northern Japan are in danger of disappearing. Few beech saplings (young tree...
TF阅读真题第972篇Australian Thunderbirds
题目： Australian Thunderbirds 1 Paragraph 1 suggests which of the following about images of birds in ancie...
