2019学年度北师大版选修七Unit20& Lesson 3 学案设计

　　[夯实·基础知识]

　　Ⅰ. 单词拼写

　　1. A p________ base will probably be set up on the moon in the next twenty years.

　　答案：permanent

　　2. The leaves of certain trees are p________ to cattle.

　　答案：poisonous

　　3. Don't pick the apples. They are not quite r________ yet.

　　答案：ripe

　　4. The river is the b________ between the two countries.

　　答案：boundary

　　5. I bought a model of the Eiffel Tower as a s________ of Paris.

　　答案：souvenir

　　6. Tom's interest in Art ________(逐渐消失) and finally he gave it up.

　　答案：faded

　　7. The Hubble Telescope was launched in 1990 so that astronomers could observe space without the Earth's atmosphere being a ________ (障碍)．

　　答案：barrier

　　8. You're not ________ (允许) to smoke in the office.

　　答案：permitted

　　9. The age of space ________ (探索) began in 1957.

　　答案：exploration

　　10. We are only really in the ________ (最初) stages of exploring space.

　　答案：initial

　　Ⅱ. 选词填空

1. ________ foreign students attending Chinese Universities has been rising steadily since 1997.