1.People under stress have performed____feats of strength, like lifting an automobile off an accident victim.

A. specific B. extraordinary C. abrupt D. abnormal

2. This book has been in the works so long that I have lost ____of most of the sources found for me by the staff of the library.

A. trace B. trail C. track D. touch

3. The elbows on your coat have worn thin, so I must ____them.

A. mend B. patch C. repair D. pitch

4. ____and wage increases have not kept in step.

A. Production B. Product C. Produce D. Productivity

5. ____drills that have no real topic have to remainas they are.

A. Manufacture B. Manipulative C. Manipulate D.Manifest

6. The disappearance of her paper has never been ____.

A. counted for B. looked up C.accounted for D. checked up

7. The audience waited in____silence while their aged speaker searched among his note for the figures he could not remember.

A. respective B. respect C. respectful D. respectable

8. Modern appliances____us from a good deal of household work.For instance, the dryer frees us from hanging the laundry.

A.escape B .benefit C. liberate D. comfort

9. When he was asked about the missing briefcase, the man ____ever seeing it.

A. refused B. denied C. opposed D. resisted

10. Communication between a young couple is a(n)____business.

A. sharp B. dreadful C. intense D. delicate

　　参考答案：BCBDB，CCCBD