What happens to a wood frog as it begins to freeze? Blood is concentrated in the center of its body. Blood stops producing sugar Water moves out of its internal organs. Water from lust beneath the skin begins to evaporate
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笔记要点
Winter Advent Winter—sp Watch， Woodfrog (Close to) →grd Unusual， Not possible Broad territory
ice Freeze Take back Heart Trigger biological response Water away Internal dry Puddle Freeze
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结构听力法
主题 强调 定义 例子 列举 因果 对比 转折 过程 结论 --出自《听出托福好英文》 编者：张艳
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强调要点
1. 重复，停顿，吐字清楚 2. 特殊词：important, interesting, point, fascinating
3. 级别 4. 问答 5. 否定
6. 特征 7. 目的 8. 研究理论 9. 顺序
10. 象征意义影响 11. 问题 12. 改变
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研究调查理论
Study, research, survey, experiment, observation, hypothesis, assumption, principle, evidence, law, idea, theory
生物话题考点
分类
部位及特征 用途（植物）
习性（动物）
栖息地 繁殖 与其他生物的关系 生存状况, 相关研究
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TPO 18 SECTION 2, lecture 4
29. What is the main purpose of the lecture? To explain the biological advantages of a physical change that occurs in North American wood frogs To explain why the North American good frog's habitat range has expanded To describe the functioning of the circulatory system of the North American wood frog To introduce students to an unusual phenomenon affecting North American wood frogs
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34. What does the professor imply when she says this She wants the student to clarify his question. She wants the student to draw his own conclusions. She thinks the student does not understand how car antifreeze works She thinks the student has misunderstood her point
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33. What impact does freezing have on some thawed wood frogs? It increases their reproductive success. It decreases their life span. It causes them to be more vocal and active. It reduces their ability to recognize potential mates.
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32. What are two points the professor makes about the thawing process of the wood frog? Click on 2 answers. The thawing process is not fully understood. The thawing process takes longer than the freezing process. The frog's internal organs thaw before its outer skin thaws. Thawing occurs when the frog's heart begins pumping glucose through its body.
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30. Why does the professor first mention the arrival of spring? To encourage students to look for thawing wood frogs To point out the time period when frogs begin mating To explain why the class will soon be doing experiments with wood frogs To emphasize the speed of the thawing process