33. 上船 _________________________　　　　　 34. 接连打击；冲击 ____________

31. 可持续发展 　__________________　　　　　　 32. 镇静；平静 ________________

29. 度过；经受住 _________________　　　　　 30. 联合国 ____________________

27. 参加；参与 ___________________　　　　　 28. 突然地 ____________________

25. 与…协调 _____________________　　　　　 26. 结束 ______________________

24. Upon a　　　　　　　 　at the hotel, they went directly to the reception desk.

23. My uncle was working at the foot of the mountain when the volcano e　　　　　　　 .

22. I u　　　　　　　 　you go give up smoking as soon as possible. It’s bad for your health.

21. Come to my office i　　　　　　　 . I have something important to tell you right now.

20. In some poor countries, people have no a　　　　　　　 　to clean drinking water.