Ⅰ. 用所给单词的适当形式填空
wheel speed compass spaceship power
1. Sound travels at a of about 340 metres per second in the air.
2. The needle was pointing north.
3. One of the of my father's car was broken on his way home.
4. Great art has the to change lives.
5. He went into space in this .

Ⅰ. 1. speed 2. compass 3. wheels 4. power 5. spaceship

Ⅱ. 根据汉语意思完成句子
1. 事实上，并非所有的梦游者都会站起来走路。
, not all sleepwalkers get up and walk around.
2. 面条在中国文化中是长寿的一种象征。
Noodles are long life in Chinese culture.
3. 你能来吗？
Will you come?
4. 他的帮助使我按时完成工作成为可能。
His help it for me to finish the work on time.
5. 我认识他们当中的很多人，例如约翰、彼得和汤姆。
I know many of them, John, Peter and Tom.

Ⅱ. 1. In fact 2. a symbol of 3. be able to 4. makes; possible 5. such as

Ⅲ. 短文填空
John is a great scientist. From an early age, John was interested 1. making things. He learned how to use tools from his dad.
At 13, he made a simple car with 2. old engine. He dreamed of becoming an 3. (invent). By high school, John 4. (build) a remote - control robot from some waste things. This won him 5. (one) prize at a science fair. His friends called 6. (he) "The Little Scientist". Later, he became an officer, rocket scientist and business leader, 7. he never stopped inventing. You may have 8. (play) with his most famous invention.
Today, John has more than one hundred 9. (use) inventions. However, he still 10. (keep) trying new things.

Ⅲ. 1. in 2. an 3. inventor 4. built 5. first 6. him 7. but 8. played 9. useful 10. keeps