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　　16The consumer complained _____ the agent _____ the bad service.

　　A with， about B to， for C against， of D of， to

　　17Steel is _____ of iron and other elements. A consisted B composed C formed D made

　　18There's too much noise outside. I can't ______ my attention on my work.

　　A pay B devote C concentrate D draw

　　19_____ I'm concerned， it's for you advisable to make your own decision.

　　A As long as B As far as C As soon as D As well as

　　20Copper _____ electricity better than other materials.

　　A directs B contracts C conducts D guides

　　21He made a phone call to _____ the time of the flight to Los Angeles.

　　A examine B approve C confirm D test

　　22We are _____ setting up a special committee to investigate the case.

　　A thinking B considering C planning D deciding

　　23If you can't figure out the word， you can ____ the dictionary for its accurate meaning.

　　A check B examine C look up D consult

　　24After she had won the first prize in the beauty _____， she became a professional model.

　　A sport B match C game D contest

　　25Metals tend to expand when heated and _____ when cooled.

　　A reduce B contrast C relieve D contract

　　26Devotion and diligence are two main factors _____ to success.

　　A amounting B contributing C counting D responding

　　27We can't _____ him of having done her wrong.

　　A deprive B confirm C convince D believe

　　28Being inexperienced， he was lack of the ability to ______ such matter.

　　A cope B deal C dispose D handle

　　29I don't think we count _____ the dishonest person for help.

　　A on B in C out D to

　　30The book _____ different stages in Chin's history.

　　A deals B covers C talks D focuses