unit 3  復合句部分
1. basis research provides the capital fund of scientific knowledge, ______ which the applied researchers draw to give society a rich rate of interest. 
a. on b. up c. out d. to

2. living in the western part of the country has its problems, ______ obtaining fresh water is not the least. 
a. with which b. of which  c. for which d. which

3. he was punished ______ he should make the same mistake again. 
a. unless b. lest  c. if d. provided

4. you will want two trees about ten feet apart, from ______ to suspend your tent. 
a. there b. them c. which d. where

5. ______ quite recently, most mothers in britain did not take paid work outside the home.
a. before b. until c. from d. since

6. scientists say it may be five or ten years ______ it is possible to test this medicine on human patients.
a. since b. before c. after d. when
7. in some countries, ______ is called “equality” does not really mean equal rights for all people. 
a. which b. what c. that d. one

8. liquids are like solids ______ they have a definite volume. 
a. in that b. for that c. with that d. at that

9. doing your homework is a sure way to improve your test scores, and this is especially true ______ it comes to classroom tests. 
a. when b. since c. before d. after

10. careful surveys have indicated that as many as 50 percent of patient do not take drugs ______ directed. 
a. like b. so c. which d. as

11. i felt somewhat disappointed and was about to leave, ______ something occurred which attracted my attention.
a. unless b. until c. when d. while

12. ______ might be expected, the response to the question was very mixed. 
a. as b. that c. it d. what
13. by success i don’t mean ______ usually thought of when that word is used. 
a. what is b. that we c. as you d. all is

14. you see the lightning ______ it happens but you hear the thunder later. 
a. the instant b. for an instant c. on the instant d. in an instant

15. i had just started back for the house to change my clothes ______ i heard voices. 
a. as b. when c. after d. while

16. when i try to understand ______ that prevents so many americans from being as happy as one might expect, it seems to me that there are two causes. 
a. why it does b. what it does c. what it is d. why it is

17. we need a chairman _____. 
a. for whom everyone has confidence b. in whom everyone has confidence
c. who everyone has confidence of d. whom everyone has confidence on

18. excuse me. if your call’s not too urgent, do you mind _____ mine first? 
a.i make b. if i make c. me to make d. that i make

19. i’ve never been to beijing, but it’s the place ______. 
a. where i’d like to visit  b. in which i’d like to visit
c. i most want to visit  d. that i want to visit it most

20. a good many proposals were raised by the delegates,  _____ was to be expected.
a. that   b.what  c. so d. as

21.   _____ i admire david as a poet, i do not like him as a man.        
a. much as    b. only if   c. if only   d. as much
22. many patients insist on having watches with them in hospital, _____ they have no schedules to keep.
a. even though   b. for  c. as if   d. since

23 many people believe we are heading for environmental disaster ______ we radically change way we  live .
a. but b. although c. unless d. lest