第1个回答 2016-03-02
Unit 2自主学习
一、1. B; 2. C; 3. D; 4. B; 5. A; 6. D; 7. D; 8. B; 9. C; 10. D; 11. C; 12. B; 13. B; 14. D; 15. A.
二、1. explorer; 2. inventions; 3. pilots; 4. control; 5. order; 6. surface; 7. scientist; 8. hunger; 9. present; 10. contributions.
三、1. inventors; 2. European; 3. further; 4. pride; 5. discovery; 6. widely; 7. production; 8. development; 9. directly; 10. properly.
四、1. serve; 2. testing; 3. landed; 4. burning; 5. not to swim; 6. speaking; 7. to understand.
五、1. were invented; 2. ever since, took his first flight; 3. on its way back, spinning out of control; 4. the first man to walk on; 5. small step for (a) man, giant leap for mankind; 6. rock samples, take back to, further research; 7. the whole family were waiting to greet me; 8. got for his service; 9. was one of the greatest people that have ever lived; 10. That’s why, unknown. 六、1. while; 2. relaxuy; 3. brings; 4. black; 5. reported; 6. used; 7. area; 8. number; 9. even; 10. choice.本回答被网友采纳