21. The__stuck on the envelope says"By Air". A. diagram B. label C. signal D. mark ...

16. By the end of1994, 558 kinds of products had been__green food. A. named B. restricted C. classified D. labeled ...

11. David tends to feel useless and unwanted in a society that gives so much___to those who compete well. A. prestige B. regime C. superiority D. regime E. legislation ...

5. Visitors are asked to__with the regulations. A. contrast B. consult C. comply D. conflict ...

20. Joan is working at the emergency room of the hospital (attached in) the Beijing Medical School. A. 错误 B. 正确 ...

4. My parents are quite()with their life today because they have experienced so much suffering. A. satisfied; B. satisfactory ...

3. Today many young people()change jobs to better themselves, or simply to gain experience. A. always; B. frequently ...

11. I have (made up my mind going) on trying until I succeed. A. 错误 B. 正确 ...

6. I dislike a player to (pretend) to be hurt in order to get a free kick. A. 错误 B. 正确 ...

20. Could you change my red hair to()less noticeable? A. anything; B. something ...