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1、大学英语四级考试模拟试题三Allspiderspossesspoisonglandsbutveryfewofthemaredangeroustohumans,ofthe600+speciesinBritainonly12(atleastoneoftheseisarecenthumanassistedcolonist)arestrongenoughtopiercethehumanskin,andapartfromallergies,nonearemoredangerousthanacommonwasp.Mostspidershave8eyes(thoughsomehave6,4,2o
2、r0),aswellas8legs.(bythewayifyoucounttheclawsasseparatelegsection[whichyoushouldn’treally]thentheirlegshave8partsaswell[coxa,trochanter,femur,patella,tibia,tarsus,metatarus,claws])Therearemorethan32000knownspeciesofspiderintheworld.Nohumanbeinghaseverbeenofficiallyrecorderashavingdiedastheresu
3、ltofa‘tarantula’bite.Allspidersarecarnivorousandfeedonlyonliquids,i.e.theirpreysnaturaljuicesandthebreakdownproductsofexternaldigestion(meaningtheyspit,exudeorinjectdigestivejuicesonto/intotheirpreyadsuckuptheresultingsoup).Sowhynotinvitesometoyournextsocialdo?What’sInaNameTheword‘Arachnida’co
4、mesfromtheGreekword‘Arachne’whowasthedaughterofIdmonofColophoninLydia,adyerbytrade.Arachneherselfwasaweaver,thebestinalltheknownworld.HoweverinafoolishmomentshechallengedAthene,thedaughterofZeusandgoddessof,amongotherthings,wavingtoaweavingcompetition.Arachnewovesoperfectacloththatshetoreittos
5、hreds.Arachnebecamedepressedafterthisandintheendshehungherself.AthenestirredtoremorseattheknowledgeofwhatherangerhadwroughtturnedtheropeArachnehadusedtohangherselfintoawebandArachneherselfintoaspidersothatthebeautyofherspinningshould9notbelosttotheworldeveragain.TheGreatHouseholdSpiderSafariTh
6、erearejustoversixhundreddifferentsortsofspiderintheBritishIsles.Butoftheseonlyahandfularecommonlyfoundinhouses.Atthefrontoftheheadareapairofwhatappeartobesmalllegs.Thesearecalledpalpsandareusedtoguidefoodtothespider’smouth.Thefrontoftheheadalsohasagroupofsixoreighteyes.Ontheundersideofthebodya
7、ttherear,arefourorsixsmallconicalbumpsorcylinders.Therearethespinneretsfromwhichthespiderproducesthesilktomakeitswebs.Tellingmaleandfemalespidersapartiseasilydonebylookingattheirpalps.Maleshaveswollenendstotheirpalpswhichmakesthemlookas
