2. (不是每个人都能理解) Einstein's Theory of Relativity.

课后作业

I.完成句子

1. We paid a visit to the middle school (附属于) the university.

9. 爆炸;爆炸声n.

10. 聪颖的;才华横溢的adj.

11. 简短的;简洁的adj.

12. 身体的adj.

13. 个人的adj.

14. 部分地;在一定程度上adv.

5. 畅销书(或唱片等) n.

6. 受害者n.

7. 生涯;经历n. 8. 相对论n.

I.单词检测

1. 诊断v. 2. 毕业V.

3. 爆炸v. 4. 逃跑;逃避v.

5. What's the topic of the text?

   A. The dangers of rockets.

   B. The development of rockets.

   C. The advantages of rockets.

   D. The invention of rockets,

4. One Italian scientist invented a rocket which .

   A. could fly into the sky

   B. could hit the enemy's horse

   C. could fly over the surface of water

   D. could clear the cloud in the air

3. Who introduced the rockets to Europe?

   A. The Song Dynasty. B. The Mongols.

   C. Wan Hu. D. The astronauts.

2. The rocket was probably invented about .

   A. 3,000 years ago   B. 200 years ago

   C. 1,232 years ago   D. 2,000 years ago

课前预习

I.课文理解阅读Rockets,选出正确答案。

1. Which of the following about the rcx:ket is NOT true?

   A. It is a kind of advanced machine.

   B. It can be used to send astronauts into space.

   C. It was invented in France first.

   D. It can be used in firework displays.