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说明文阅读理解备考策略之二
and Defenses D. How Animals Eat Plant Leaves
[答案与解析]:
69. B 植物保护自身方式判断题。
由原文第三节首句Some plants,such as the oak tree,have thick and hard leaves that are difficult for animals to eat.体现答案。
70. C 植物保护自身方式判断题。由原文第四节This messenger sends to the roots the information to produce more nicotine可以推出答案。
71. B 标题判断题。认真阅读分析原文不难发现,原文第一节末句But plants can defend themselves by using both physical and chemical means.为主题句,全文围绕它展开说明,由此不难找到答案。