8. In the advanced course students must take performance tests at monthly__. A. gaps B. intervals C. length D. distance ...

40. We are expected to__the dross and select the essential. A. depart B. desert C. discard D. abandon ...

29. Operators of employment agencies must conduct their business in strict__with the law. A. complaint B. compliance C. complacent D. complacency ...

12. An international treaty sighed several years ago bans trade in plants and animals of endangered species. A. promotes B. protects C. forbids D. eliminates ...

4. Call your doctor for advice if the __persist for more than a few days. A. response B. signals C. symptoms D. reflections ...

12. The explosion in the mine was__by a careless miner who lit a match. A. triggered B. claimed C. hampered D. protested ...

3. The millions of calculations involved,__by hand, would have lost all practical value by the time they were finished. A. had they been done B. they had been done C. having been done D. they were done ...

37. Many automoblile accidents were__careless driving. A. attibuted to B. resulted in C. contributed to D. raised from ...

22. Harold claimed that he was a serious and well_known artist, but in fact he was a(an)__. A. alien B. client C. counterpart D. fraud ...

13. As the train will not leave until one hour later, we__grab a bite at the snack bar. A. may well B. just as well C. might as well D. as well ...