《2025年情景导学高中英语必修第一册外研版》

Ⅳ. 课文导读
Many 1.______animals (animal) move from one place to another at certain times of the year. The migration of the North American monarch butterfly 2.______is (be) one of the most wonderful migrations. During its long and difficult journey, the monarch butterfly manages 3.______to find (find) its way to the places 4.______where (it will spend the winter. Scientists have found how it does this. The monarch is able to tell the time of day and can also use its eyes 5.______to measure (measure) the position of the sun. 6.______Eventually (eventual), it reaches the places it wants to go to. But unfortunately, its population 7.______has crashed (crash) greatly in the last few years. Human activity is the main reason 8.______why (the number of monarch butterflies is falling. We should have a better understanding 9.______of (the monarch’s behaviour. By 10.______doing (do) more research, this lovely creature can survive and keep its place in the natural world for a long time to come.
＞学习提示：试着说出标黑体的单词在导读短文中的汉语意思并体会其用法。

答案： 1. animals 2. is 3. to find 4. where 5. to measure 6. Eventually 7. has crashed 8. why 9. of 10. doing

①measure v. 量,测量；衡量(某物的重要性、价值或真正性质)n. 措施,方法
②measure sth by sth 用某物衡量某物
③takemeasurestodo sth 采取措施做某事
④measurement n. 测量,计量,衡量

答案： ①measure ②measure; by ③take measures to do ④measurement

单句语法填空
The scientists asked the volunteers to take the tests to measure (measure) their mental ability.

答案： to measure