题目内容
剪裂缝的特点是裂缝紧闭，裂缝面比较平直、光滑，常有擦痕。
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假定一个企业的保本销售量是5万件，当它的销量达到500l件时，企业就会盈利；当销量为4999件时，就会亏损。
纬编织物和经编织物都是由线圈构成的。
TheNationalEndowmentfortheArtsrecentlyreleasedthetheresultsofits“ReadingatRisk”survey,whichdescribedmovementoftheAmericanpublicawayfrombooksandliteratureandtowardtelevisionandelectronicmedia.Accordingtothesurvey.“readingisonthedeclineonevery 62.__________region,withineveryethnicgroup,andateveryeducationallevel.“ThedaytheNEAreportreleased,theU.S.House,inatie 63.___________vote,upheldthegovernment'srighttoobtainbookstoreandlibraryrecordsunderaprovisionoftheUSAPatriotAct.TheHouseproposalwouldhavebarredthefederalgovernmentfromdemandlibraryrecords,readinglists,bookcustomer 64.___________listsandothermaterialinterrorismandintelligenceinvestigations.Thesetwoeventsarecompletelyunrelatedto,yetthey 65.___________echoeachotherinthemessagetheysendabouttheplaceofbooksandreadinginAmericanculture.AttheheartoftheNEAsurveyisthebeliefinourdemocratic 66.__________systemdependsonleaderswhocanthinkcritically,analyzetextsandwritingclearly.Alloftheseareskillspromotedby 67.__________readinganddiscussingbooksandliterature.Atthesametime,throughaprovisionofthePatriotAct,theleadersofourcountryareunconsciouslysendingthemessagethatreadingmaybeconnectedtodesirableactivitiesthatmight 68._________undermineoursystemofgovernmentratherthanhelpingdemocracyflourish.Ourculture'sdeclineinreadingbeginwellbeforethe 69._________existenceofthePatriotAct.Duringthe1980s'culturewars,schoolsystemsacrossthecountrypulledsomebooksfromlibraryshelvesbecauseitscontentwasdeemedbyparents 70.__________andteacherstobeinappropriate.Nowwhatstartedinschoolsacrossthecountryisplayingitselfoutonanationstageand 71.________ispossiblyhavinganimpactonthereadinghabitsoftheAmericanpublic.在63处填写改错内容。
人参含有齐墩果酸类人参皂苷而具有保肝作用
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