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1、2014高考英语文章阅读类:2013暑假练习题(17)及答案解析第二部分:阅读理解(第一节20小题,第二节5小题;每小题2分,满分50分)第一节:阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题纸上将该选项标号涂黑。(A)(文章选自ChinaDaily,题目)XI'AN-China'sconservationworkfortheendangeredcrestedibis(朱鹮)isfacingnewchallenges,includinganincreasingdeathrateduetoinbreeding(同系繁殖),andtheconfl
2、ictbetweentheneedtoexpandnaturalhabitatsandlocalcommunities'economicinterests,birdexpertshavewarned.Thecrestedibis,oncewidespreadinJapan,China,RussiaandtheKoreanPeninsula,almostbecameextinctinthefirsthalfofthe20thcentury.Before1981,whensevencrestedibiswereaccidentallyfoundinYangxiancounty,
3、inNorthwestChina'sShaanxiprovince,academicsthoughtthespecieshadbeenextinctinChinaforalmost17years.Duetothehugeeffortputintospeciesprotectionsince1981,thenumberofcrestedibisinChinahasrisentoanestimated1,617,including997inthewild,theStateForestryAdministrationsaidatameetingoncrestedibisprote
4、ctioninXi'anonMonday.However,althoughtheibispopulationexceeds1,000,thebirdsarestillnotfreefromthethreatofextinction,saidFangShengguo,directoroftheStateConservationCenterforGeneResourcesofEndangeredWildlifeatZhejiangUniversity.Ornithologistsusedinbreedingintheearlystagesofprotectionsothatnu
5、mbersofthepreciousbirdscouldincreasequickly,butthatmethodhadconsequences,Fangsaid."Studieshaveprovedthatasaresultofinbreeding,crestedibishavethelowestgeneticdiversityofallendangeredbirds,"Fangsaid.-11-"Itmeansahighdeathrateandmorephysicaldefectsforhatchedchicks."Thegovernmentshouldcollectg
6、eneticinformationfromallcrestedibisandestablishageneticdatabaseassoonaspossible,thendesignascientificmatingplanforthespecies,Fangsaid.Sofar,about90percentofcrestedibisliveinShaanxiprovince,andfewerthan140ibisliveinthreezoosinotherpartsofthecountry,includingBeijingZoo,accordingtoLiuDongping
7、,anassistantresearcherattheNationalBirdBandingCenterofChina,whichisaffiliatedtotheChineseAcademyofForestry.Thebirdhaslosttheabilitytomigrate,hesaid,addingthatifanunexpectednaturaldisasteroccurredinShaanxiprovinceoraninfectiousdiseasespreadthroughthearea,theibi