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ID:47345178
大小:145.00 KB
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时间:2019-09-06
《2019届高考英语阅读理解:科普类说明书文--有解析汇报》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、实用标准文档科教科普类1、 Australialeadstheworldinitsnumberofresidentpoisonousspidersaswellasthestrengthoftheirtoxicity(毒性).However,ofalmost9,800speciesmostareperfectlyharmlessandinteresting. Spiderdiversityisbroadandmanyfascinatingspeciesoccurherethatrangefromthelargetothetinyandhardlynoticed,andfromthedu
2、llestblacktothestrangelyshaped. Spiderscanberoughlyclassifiedaccordingtothestrategies(策略)theyuseforfeeding.Spiderswhichappearedearlierintheevolutionaryscalefeedbywaitinginacaveforfoodtocomealongbeforegrabbingit.Followingthemwerespiderswhichactivelywanderedlookingforfoodandwhichcaughtitbychasingit
3、down.Theevolutionofflyinginsectsmakesspidersevolvenewwaysofcatchingfoodwhichcouldn’tbechasedandsotheearliestairwebweaversarose. MostspidersfeedoninsectsandotherarthropodsbuttheWhistlingSpiderfeedsonfrogsandsmallbirds.TheGoldenOrbSpideralsofeedsonsmallbirds. Aspiderperiodicallysheds(蜕皮;脱落)itsski
4、nsothatitcangrow.Immaturestagesarecalledmoults.Eachspecieshasaparticularnumberofmoultsthatitwillgothroughbeforereachingitsfinaladultstage. Usually,oncemalespidershavemated,theydieshortlyafter.But,evenindeath,Redbackmalesoftenserveapurpose.ThealreadypregnantRedbackfemalesalwayskilltheirloverand,in
5、mostcases,alsoeatthem.Thisprovidesthemwithasmallreproductiveadvantage. Allowingspiderstotakeupplacesaroundhousescanbebeneficialinthattheycatchotherannoyinginsectssuchasmosquitoesandflies. Restassuredthatwhileyoumightseesomelargespiders,andperhapsevensomepoisonousones,agoodruleistolookandadmireb
6、utdon'ttouchanyspideryoufind.Eventhosewithoutpoisoncouldstillhaveanastybite.1.Differentfamiliesofspidersareidentifiedthemselvesby ______.A.theirphysicalcharacterB.theirwaysofgettingfoodC.thestrengthoftheirtoxicityD.theireffectontheenvironment2.Whatarethelatestspidersintheirevolutionprocess?文案大全实用标准
7、文档A.Spidersthatchasedowninsectsforfood.B.Spidersthatwaitfortheinsectstocomealong.C.Spidersthatcanweavewebstocatchflyinginsects.D.Spidersthatactivelygoouttolookforinsectsasfood.3.Ifaspiderstaysonthewallofyou
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