1、This diploma _____ that you have completed high school.

　　A.proves　　B.certifies　　C.secures　　D.approves

　　2、Up until that time, his interest had focused almost _____ on fully mastering the skills and techniques of his craft.

　　A.restrictively　　B.radically　　C.inclusively　　D.exclusively

　　3、That sound doesn't _____ in his language so it's difficult for him to pronounce.

　　A.happen　　B.take place　　C.occur　　D.run

　　4、The security guard _____ two men who were yelling in the courtroom.

　　A.expelled　　B.propelled　　C.repelled　　D.dispelled

　　5、In most cases politicians are _____ as they seldom tell the truth.

　　A.credible　　B.credulous　　C.incredulous　　D.incredible

　参考答案：

　　1、B　2、D　3、C　4、A　5、D