全新版 大学英语 听说教程 第三册 听力原文

So one mystery is solved. But another remains. How do the butterflies find their way? Those that migrate south in the fall were born sometime during the summer or early fall. They have never been to Mexico. Yet they somehow seek out the same resting places. The mystery of how they find their way is left for future scientists to solve.

Questions:

1. What did Mr. Urquhart and his colleagues do in order to find where the monarchs spent the winter?

2. Which of the following is a key condition for the butterflies' winter home?

3. Where do the butterflies sleep?

4. What can we infer about Mr. Urquhart's project according to the passage?

重点单词及词组

Part B

crisp 易碎的， foliage 树叶，植物 carbon dioxide 二氧化碳 photosynthesis 叶绿素

chlorophyll 光合作用 combination 化合物

shrub 灌木 pigment 色素,颜料

timing 适时 biochemical 生物化学的

landscape 风景 spectacular 引人入胜的

vigorously 精力旺盛地

Part C

stained-glass 彩色的玻璃 volunteer 志愿的

fragile 易碎的 detective 侦探

migration 移民，移植 zoologist 动物学家

Part D

migratory 迁移的 hideaway 隐蔽处

suit to 相称 move about 走来走去，经常搬家