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