英语综合类补全词汇有关英语综合类补全词汇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scarcityn.缺乏，不足注释：1.industries：行业2.fordecades：有几十年。for后接复数的时间词是常用结构，如fordays，foryears等。本文第四段还会出现foryears.3.“That‘sthegreatthingaboutants.”：greatthing指前一句的antsaresocommonthroughouttheregion.4.treeharvesting：伐林练习：AThisallowedscientiststogaug