1. A number of --- many/ a lot of
　　2. A great deal of ---a lot of
　　3. A great many --- al lot of
　　4. A great variety of ----- many kinds of
　　5. A variety of --- many kind of
　　6. Abundant -sufficient -ample –enough
　　7. A small sum of – little money
　　8. Adequate --- enough
　　9. A majority of --- most of
　　10. Approximately – almost
　　11. Above all --- the most important thing
　　12. accelerate – increase
　　13. Accuse sb of doin ---- charge sb with doin
　　14. Acquire---gain/ obtain
　　15. Acquaintance ---friend /company
　　16. ….are highly condemned ---- people criticize．． Badly
　　17. advocate –call for
　　18. adversity – hardship
　　19. afford to – can pay for
　　20. attribute to – because of

【责任编辑：青枫】