内容正文：
What mysteries of nature do you know about?
Migration(迁徙)
北美帝王蝶
What are the characters of this kind of butterflies?
They have beautiful coats.
They fly among flowers.
They are like angles of spring.
What are the characters of this kind of butterflies?
……
Lesson 28
The Study of Living Things
biology n.
butterfly n.
migrate v.
fantastic adj.
completely adv.
grandchild n.
female n.
milkweed n.
chemical n.
puzzling adj.
生物;生物学
蝴蝶
迁徙;移居
奇异的;极好的;了不起的
完全地
(外)孙(女)
雌性动物/植物；女子
马利筋（一种植物）
化学物质
令人费解的
New
Words
复数：butterflies
n. migration
复数：chemicals
V. puzzle
生物学家biologist
复数：grandchildren
New
Word
Checks
1. the science that studies living things.
2. Extremely good; excellent.
3. Something is as great in degree as it possibly can be.
4. A child of the son or daughter.
5. Of the sex that can lay eggs or give birth to babies.
6. To move from one part of the world to another according to the season.
7. Connected with chemistry.
8. If something puzzles you, you do not understand it and feel confused.
fantastic
biology
grandchild
female
completely
chemical
migrate
puzzling
Match the word with its meaning.
living things 生物
Divide the text into three parts and match the main idea with each part.
Part 1.
Para 1-2
Part 2.
Para 3-4
Part 3.
Para 5-6
Things that scientists can’t understand.
Fantastic facts about butterflies.
Things that Dr. Taylor worries about.
Read Para 1-2. and complete the table
Fantastic facts about butterflies
1. The butterflies always_______ to the small piece of forest and ______ the winter there.
2. The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.
3. The females _______ eggs on only one plant:milkweed.
return
spend
lay
（翻译） The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.
返回南方的蝴蝶是去往北方的蝴蝶的玄孙子。
Things that Dr. Taylo