25. In January , 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.

　　A. it marked 　　B. marking 　　C. marked 　　D. to mark

24. To answer correctly is more important than _____.

　A. that you finish quickly　　 　　　B. finishing quickly

　C. to finish quickly　　　　　　　 D. finish quickly

23. _____ the front door _____, he had to enter the room through the back door.

　A. Seen; painted　　　　　　　　　 B. Seeing; painted

　C. Being seen; being painted　　　　 D. Seeing; being painted

22. --- Have you considered _____ your job as a teacher?

　--- Yes. I like the job because a teacher is often considered _____ a gardener.

　A. to change; to be　　　　 B. to change; being

　C. changing; being　　　　 D. changing; to be

21.　He　looked　around　and　caught　a　man　_______　his　hand　into　the　pocket　of　a　passenger.　

　A.　put　　 B.　to　be　putting　　 C.　to　put　　 D.　putting　

20. Time ______________, I'll go on a picnic with you. 　 A. permit B. to permit C. permitted D. permitting

19.　The　bell　_______　the　end　of　the　period　rang,　_______　our　heated　discussion.　

A.　indicating;　interrupting　　　　 B.　indicated;　interrupting　

C.　indicating;　interrupted　　　　 D.　indicated;　interrupted　

18. Kathy 　　　　　　a lot of Spanish by playing with the native boys and girls.

　　　 A．picked up　 B．took up　　 C．made up　 D．turned up

17. Finding her car stolen, ________.

A. a policeman was asked to help　　 B. the area was searched thoroughly

C. it was looked for everywhere　　 D. she hurried to a policeman for help

16. I have something ______ to discuss with you.

A. of great importance　　　　　　　　　　　　　　　　　　　 B. of very importance

C. great important　　　　　　　　　　　　　　　　　　　　　　 D. very importance