31. As we know, Mark is a ______ investor (投资者) who does research on market before he buys things.

A. lucky　 　　　　　　 B. generous　　 　　 C. patient　　　　　 　　 D. cautious

30. It was in the garden of her old house ______ she grew up ______ she dug up a pot of silver and gold.

A. that; where　　　 B. where; that　　　　 C. which; what　　 　　 D. what, which

29. I was told that ______ 11:15 flight would take us to Beijing in time to reach ______ Tsinghua University.

A. the; a 　　　　　　　　　 B. a, the　 　　　　　 C. the; / 　　　　　　　　　　　 D. /; the

28. -- I am going to Sidney for further studies next month.

-- That's fantastic. Can you keep emailing me ______ you are there?

A. though　　　　 　 B. because　　 　　 C. until　　　　　 　　 D. while

27. The 3G cell-phone must be of great use and convenience to ______ wants to get the information through the Internet quickly.

A. who　　　　　 　　 B. whichever　 　　　 C. whoever　　　　　 D. whomever

26. Johnson was to blame for the incident. But ______ his positive attitude, we forgave him because "Every man has his faults."

A. in view of　　　 　 B. in search of　　　　　　　 C. for fear of　　　　 　 D. in exchange for

25. Housing prices ______ much higher now if the government hadn’t taken measures to control housing dealing.　

A. were　　　　 　　　 B. had been　　　　　 C. would be　　　　　　　　　 D. would have been

24. The ______ that the injured should be sent to the hospital without delay turned out to be wise.

A. benefit　　　 　　　　　　　 B. account　　　 　 C. occupation　 　　　　　 D. command

23. -- Are we going sightseeing sometime next month?

-- No. The plan ______ at the second meeting.

A. was cancelled　 　 B. would cancel　　 C. has cancelled　　　 D. had been cancelled

22. -- What do you think of the set of popular science books?

-- It couldn't be better! It ______ many problems we are interested in exploring.

A. covers　　　　 　 B. consults　　　　 　　 C. measures　　　　 　　 D. writes