12. The worker agreed to _____ the strike if the company would satisfy their demands.

　A. call for B. call forth C. call off D. call up

11. The managing director took the _____ for the accident, although it was not really his fault.

　A. guilt B. charge C. blame D. accusatio

10. The new secretary has written a remarkably _____ report only in a few pages but with all the details.

　A. concise B. clear C. precise D. elaborate

9. More than one-third of the Chinese in the United States live in California, _____ in San Francisco.

　A. previously B. predominantly C practically D. permanently

8. No one has _____ been able to trace the author of the poem.

　A. still B. yet C. already D. just

7. The ship was _____ in a storm off Jamaica.

　A. drowned B. sunk C. wrecked D. submitted

6. She was afraid that unless the train speeded up she would lose her _____ to Scotland.

　A. ticket B. place C. seat D. connection

5. Henry's news report covering the conference was so _____ that nothing had been omitted.

　prehensive D.understandable

4. The lost car of the Lees was found _____ in the woods off the highway.

　A. vanished B. abandoned C. scattered D. rejected

3. Our research has focused on a drug which is so _____ as to be able to change brain chemistry.

　A. powerful B. influential C. monstrous D. vigorous