说明：阅读下面的短文，从短文后所给各项的四个选项(A、B、C、D)中选出能填入相应空白处的最佳选项。

Health experts have warned (　1) many years that smoking can (　2) to heart disease, cancer (癌症，肿瘤) and (　3) medical problems. And officials say diseases caused directly (　4) smoking kill at (　5) 320,000 Americans each year. But smokers still find (　6) difficult to stop. The tobacco industry (　7) 40 million Americans continue to smoke. Every year the American Cancer Society (　8) a national Non-smoking Day in an (　9) to get people to give ( 10) cigarettes. On that day the officers from the Society will ( 11) advice on ( 12) to stop smoking. Smokers ( 13) can call a special telephone number to ( 14) recorded messages by doctors. Some businesses will ( 15) their workers candy (糖果) or chewing gum (口香糖) to help them to keep ( 16) smoking. Some companies are offering special gifts and prizes to ( 17) who sign an agreement to stop smoking. And Americans ( 18) do not smoke are being asked to help ( 19) one person who is smoking during the 24- ( 20) campaign (运动).

　1.ofsince　 　for　 against　

　2.get　 lead　take　another　

　3.like　another　 other　 　few　

　4.from　with　byin

　5.all　 least　 　first　 　last　

　6.that　this　itthem　

　7.speakssays　talks　 　tells

　8.forms　 　organize　makes　 　picks

　9.intention (意图)　 order　 　     attempt　 experiment　

 10.out　 inupaway　

 11.take　make　give　propose　

 12.what　where　 　how　 why　

 13.also　eitherstill　 　further　

 14.hear　acceptsend　leave　 　

 15.lend　sell　offer　 　reward

 16.from　inupat

 17.anyonesomeone　 peoplethem　

 18.what　they　who　 themselves

 19.just　often　 　nearlyhardly

 20.hour　week　day　 hours　 　

答案:
CBCCB  CBBCC 
CCAAC  ACCAA