如果您无法下载资料，请参考说明：
1、部分资料下载需要金币，请确保您的账户上有足够的金币
2、已购买过的文档，再次下载不重复扣费
3、资料包下载后请先用软件解压，在使用对应软件打开
职称英语综合C短文补全练习题2017职称英语综合C短文补全练习题Thetalentofsuccessisnothingmorethandoingwellwhateveryoudowithoutathoughtoftime.以下是小编为大家搜索整理的2017职称英语综合C短文补全练习题，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!AntsasaBarometerofEcologicalChangeAtpicnics,antsarepests.Buttheyhavetheiruses.Inindustries1suchasmining,farmingandforestry,theycanhelpgaugethehealthoftheenvironmentbyjustcrawlingaroundandbeingantsy.Ithasbeenrecognizedfordecades2thatants—whicharehighlysensitivetoecologicalchange—canprovideanear-perfectbarometerofthestateofanecosystem.Onlycertainspecies,forinstance,willcontinuetothriveataforestsitethathasbeenclearedoftrees.1Andstillotherswillmoveinandtakeupresidence.Bylookingatwhichspeciespopulateadeforestedarea,scientistscandeterminehow“stressed”thelandis.2Antsareusedsimplybecausetheyaresocommonandcomprisesomanyspecies.Whereminesitesarebeingrestored,forexample,someantspecieswillrecolonizethestrippedlandmorequicklythanothers.3AustralianminingcompanyCapricornCoalManagementhasbeensuccessfullyusingantsurveysforyearstodeterminetherateofrecoveryoflandthatitisreplantingnearitsGermanCreekmineinQueensland.Antsurveysalsohavebeenusedwithmine-siterecoveryprojectsinAfricaandBrazil,wherewarmclimatesencouragedenseanddiverseantpopulations.“Wefounditworkedextremelywellthere,”saysJonathanMajer,aprofessorofenvironmentalbiology.YetthesurveysareperfectlysuitedtoclimatesthroughoutAsia,hesays,becauseantsaresocommonthroughouttheregion.AsMajerputsit：“That’sthegreatthingaboutants.”3Antsurveysaresohighly-regardedasecologicalindicatorsthatgovernmentsworldwideaccepttheirresultswhenassessingtheenvironmentalimpactofminingandtreeharvesting4.4Whynot?Becausemanycompaniescan’taffordtheexpenseorthelaboratorytimeneededtosiftresultsforacomprehensivesurvey.Thecoststems,also,fromthescarcityofantspecialists.5.词汇：ecologicaladj.生态学的.barometern.气压计forestryn.林业gaugev.测定,测量antsyadj.坐立不安的ecosystemn.生态系统populatev.居住deforestv.采伐树林,清除树林recolonizev.再度移民到siftv.详审scarci
立即下载
