1. John is collaborating with Mary in writing an article.

　　A.cooperating

　　B.competing

　　C.combining

　　D.arguing

　　2. He isdetermined to consolidate his power.

　　A.strengthen

　　B.control

　　C.abandon

　　D.exercise

　　3. Manyscientists have been probing psycholog ical problems.

　　A.solving

　　B.exploring

　　C.settling

　　D.handling

　　4. Hearingproblems may be alleviated by changes in diet and exercisehabits.

　　A.removed

　　B.cured

　　C.worsened

　　D.relieved

　　5. And thecars are tested for defects before leaving thefactory.

　　A.functions

　　C.motions

　　B.faults

　　D.parts

　　参考答案：1. A 2. A 3. B 4. D 5. B

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（实习编辑：高奕飞）