30. The maths problem is very difficult. I work it out, _____.
A. still B. yet C. although D. though
29. advertisements are of great help, I don¨t think we should entirely rely on them.
A��Since B��While C��Because D��As
28. -What do you want from the grocery store?
-- Oh, I just need some toothpaste and _____.
A. a little bit of other things B. a couple of other things
C. a few of some other things D. some other little things or two
27. ____ plants and animals deep in the ocean, scientists may find a cure for some of our most serious human diseases.
A. To study B. Studying C. Study D. By studying
26. At the shopping centre, he didn¨t know what _____ and _____ with an empty bag.
A. to buy; leave B. to be bought; left C. to buy; left D. was to buy; leave
25. A few people were killed in the fire, but _____ were saved.
A. the most B. most of them C. most of whom D. most
24. �C Why not go and have dinner in a restaurant?
-- _____. It¨s too expensive.
A. I agree B. I¨m afraid not C. I don¨t think so D. I¨m sure
23. The plan was in _____ just because people were unwilling to cooperate.
A. ruins B. pieces C. danger D. trouble
22. --Can I have something to eat, Mum? I feel hungry.
-- You ____ be hungry. You¨ve just had some bread and ham.
A. mayn¨t B. won¨t C. mustn¨t D. can¨t
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貫A、B、C、D膨倖僉�釀丕�僉竃辛參野秘腎易侃議恷煮僉��,旺壓基籾触貧繍乎�醉榛據�
21. It¨s quite obvious that the aging population in China will cause _____ heavy pressure
on _____ whole society in the future.
A. a; / B. /; / C. a; the D. the; a