3. A computer is a complex machine．It is not simple．A. simple　　 B. complicated　　 C. beautiful　 D. expensive

2. When Glen finished college，he couldn't find a job．Then his luck changed．A big engineering company hired him．

A．give him a job　 B．paid him　 C．told him to stop working　　 D．told him about his future

1. John drives too fast，and he often drives in the middle of the street．He doesn't watch what the other cars are doing．He is a reckless driver．　 A．very careful　　 B．very careless　　 C．very harmful　　 D．very harmless

13. forgettable--unforgettable　 15. able-disable　　 16. defensive--defenseless 　　　 17. happy--unhappy 　　　　　　　　　 18. polite-impolite　 19.hopeless--hopeful 　　　　　　　 20.active--inactive 　　　　　　　 21. interesting--uninteresting

9. logical-illogical　 10. regular--irregular 　　　　　　 11. stop--nonstop 　 　12. possible-impossible

5. understand--misunderstand 6. ugly-beautiful　 7. friendly--unfriendly 　　　　　　　 8 expected--unexpected 　　　

1.　　　 appear--disappear　 　 2. honest--dishonest 　　　　　　 3. careful-careless　 4. visible-invisible　

20. danger--endanger 　　　　　　　 21. large-enlarge

Ⅲ. Put the following into antonym:

16. success--succeed 　　　　 17. analysis--analyse 　　　　　 19. description--describe

9. courage-encourage　 10. terror--terrify 　　　　　　　　 13. able--enable 　　　　　 15. sight-see