6. A. approaches B. contributions C. introductions D. attitudes

7. A. complex B. popular C. scientific D. successful

8. A. later B. deliberately C. seldom D. thoroughly

9. A. behavior B. taste C. future D. nature

10. A. failures B. changes C. consequences D. thrills

11. A. defend B. delay C. repeat D. reconsider

12. A. communication B. bond

　　C. friendship D. trust

13. A. reply B. attend C. attach D. talk

14. A. hate B. scold C. frighten D. stop

15. A. loving B. observing C. understanding D. praising

答案

1. D　2. B　3. C　4. B　5. C　6. A　7. D　8. A　9. A　10. C　11. D　12. A　13. D　14. B　15. C　

第二节 阅读理解

　　However wealthy we may be, we can never find enough hours in the day to do everything we want. Economics deals with this problem through the concept of opportunity cost, which simply refers to whether someone's time or money could be better spent on something else.

　　Every hour of our time has a value. For every hour we work at one job we could quite easily be doing another, or be sleeping or watching a film. Each of these options has a different opportunity cost-namely, what they cost us in missed opportunities.

Say you intend to watch a football match but the tickets are expensive and it will take you a couple of hours to get to and from the stadium. Why not, you might reason, watch the game from home and use the leftover money and time to have dinner with friends? This-the alternative use of your cash and time-is the opportunity cost.