| 1. |  stationary satellite |
|---|---|
| 2. | gravity |
| 3. | balance |
| 4. | upward |
| 5. | Fix |
| 6. | climb |
| 7. | traveling abroad |
| 8. | electricity |
| 9. | down |
| 10. | up |
| 11. | rockets |
| 12. | carbon dioxide |
| 13. | potential |
| 14. | lightest |
| 15. | thin |
| 16. | tiny amounts |
| 17. | mass production |
| 1. | F |
|---|---|
| 2. | T |
| 3. | F |
| 4. | T |
| 5. | F |
| 1. | electricity |
|---|---|
| 2. | production |
| 3. | reality |
| 4. | Unlike |
| 5. | development |
| 1. | achieve |
|---|---|
| 2. | exist |
| 3. | fix |
| 4. | material |
| 5. | surface |
| 1. | According to the newspaper |
|---|---|
| 2. | The language is no longer used |
| 3. | It sounds like a good idea that |
| 4. | is much larger than that of Japan |
| 5. | Suzy has dreamed of becoming a dancer |
| 1. | The space elevator works on the balance of the Earth’s gravity and the centrifugal force. So, it needs no electricity. |
| 2. | The space elevator produces electricity when it comes down. This electricity is used when it goes up. |
| 3. | If the elevator moves 200 to 300 km per hour, it will reach the height of the ISS in a week. |
| 4. | The space elevator is different from rockets because it won’t produce any carbon dioxide. |
| 5. | Carbon nanotubes are the lightest and strongest of all materials on the Earth. They can be produced in large amounts. |
