9.The robots used in nuclear power plants can prevent human personnel from being ______ to radiation.

　　A.released

　　B.disclosed

　　C.revealed

　　D.exposed

　　[解析]本題是詞匯辨析題，考點是expose….to使…暴露于…;使….接觸….;本題的意思是：在核工廠使用的機器人可以使人不接觸輻射。prevent…. from doing sth. 阻止某人不…..; release釋放; disclose 泄露，揭露; reveal 揭示

　　10.______, they began to get down to business.

　　A.The holidays are over

　　B.The holidays were over

　　C.The holidays being over

　　D.The holidays had been over

　　Ⅱ.Cloze Test

　　American business is based on the profit motive.So make no mistake. The company you work 11 will have some method of measuring employee productivity. Your future there will depend on 12 you rate.

　　Productivity is relatively easy to measure in some cases.13 a college student, your overall productivity was measured by your grade point average. Hourly workers, 14 assembly line operators,are usually measured by the 15 of items produced in a given amount of time. Measuring the productivity of some service and management personnel is 16 difficult because of the many factors to be considered.

　　New employees are 17 expected to perform at their maximum potential.A break - in period is allowed, 18 can be several weeks, depending on the job.By the time of your first performance evaluation, you should 19 average productivity. Then you should try to reach your 20.

　　11.A.for

　　B.out

　　C.to

　　D.on

　　答案：A

　　[解析]You work for是定語從句修飾The company, work for 的意思是為…工作。這句話的意思是：你為之工作的公司會有一些測量員工工作效率的方法。