参考答案
unit 1
1. calm 2. concerned 3. share 4. purpose 5. loose 6. according, teenagers
7. through, suffered 8. entirely 9. advice 10. communicate 11. habit
12. reason, cheat
unit 2
1. including 2. native 3. elevators 4. actually 5. government
6. recognize 7. present 8. rapidly 9. international 10. direction
unit 3
1. finally 2. stubborn, persuade 3. insisted 4. properly
5. determined, change 6. give 7. valley 8. attitude 9. records
10. topic 11. familiar 12. brave
unit 4
1. shake 2. smelly 3. burst 4. canal 5. steam 6. dirt
7. ruins 8. injured 9. survivor 10. rescue 11. disasters
12. organized 13. fresher 14. Judging 15. honour, speech 16. preparing
unit 5
1. quality 2. willing, trouble 3. heart 4. principle 5. peaceful, peace
6. sentenced, prison 7. period, law, lawyer 8. advises 9. continued
10. position 11. accept 12. violence 13. equal 14. blanket 15. educated, cruelty