unit-4-creatures-large-and-small

Unit4•Whatcreaturesarethey?•Whatdoyouthinkofthem?•Theyare_____________________...cute,lovely,beautiful•Whatdoyouthinkofit?•Itis_____________________...frighteningThetruthaboutspiders•Spidersmaylooklikeinsects,butareverydifferentfromthem.Onedifferencebetweenaspiderandaninsectisthataspider’sbodyisdividedintotwoparts,theheadandtheabdomen（腹部）.Insectshaveathirdpart,calledthethorax(胸部）。Additionally,spidershave8legs,whileinsectshaveonly6.•Allspidersarecarnivores(meat-eater).Theyeatinsectsorothersmallcreatures.Theyusetheirfangs（尖牙）toinjecttheirpreywithpoison.Allspidershavespinnerets(吐丝器)thatareusedtoproducesilk.However,notallspidersmakewebs.•Thereareover40,000typesofspiderslivinginallpartsoftheworld.Oneofthelargestspidersisthegoliathspider(巨人蜘蛛),whichlivesinSouthAmerica.Onegoliathspidermeasuredmorethan27centimetersacross.Thesespidersprimarilyliveonbirds.Likemostspiders,theyarenotgenerallyconsidereddangeroustohumans.Questions•1.Howmanypartsarespiders’bodydividedinto?•2.Whatdoallspidersliveon?A.InsectsB.BirdsC.PeopleD.meat•3.Allspiders________,butnotallspiders_____.A.Makesilk,producewebsB.Eatinsects,havefangsC.Have8legs,producesilkD.Have2parts,have8legs•Whileallspidersarepoisonous,mostare_____.A.harmfultopeopleB.notharmfultopeopleSkimming:skimthetitle,theintroductionandthefirst7lines.•1.WhatistheFriendorEnemymentionedinthetitle?•2.whoareinvolvedinthisconversation?•3.what’sthepassageabout?spidersBettyandWinston.BettyandWinston’sviewonspiders.Part1Theintroductionofthetopic(Line1-10)•Winston’sview•Usefulcreatures•Betty’sview•FrighteningTheoutlineofthetext•Part1:•Part2:•Part3:•Part4:•Introduction(line1-10)•Usefultofarmers(11-24)•Usefultoscientist(25-32)•Usefultodoctors(33-40)Part2:beingusefulto__________•1.Whatdotheydoforspiders?•2.Howlongwillitstayintheshelter?•3.Whenspringcomes,thespidersemerge________and__________.farmersFarmersbuildsheltersforspiders.Theysurvivewinterinthem.healthyhungrycone-shapedstrawtentshelterssurvivePart3:beingusefulto___________scientistsThepropertiesofspidersilkstrongerthansteellighterthanafeatheraselasticasarubberbandUsesofspidersilkspacecraftartificialorgansbulletproofvest•HasBettychangedherviewonspiders?•Findanadj?•nasty!Part4:beingusefulto___________•Theirpoisonmightbeusefulto________________________.•What’sBetty’sreaction?doctorstreatbraindisordersinhumansShelaughedandmadefunofWinston.inthefieldofagricultureinthefieldofscienceA:materialsciencemedicinenaturalmethodofpestcontrol.Newmaterialscanbemadefromspiders’silktobeusedinB:Spiders’poisoncanSpiderseatinsects,whichservesasaspacecrafts,artificialorgansandbulletproofvests.beusedtotreatbraindisordersinhumans.SummarySpidersarenot___________.They_________winterbylivingin_________builtbyfarmers.Inspring,theyeat_________thatattackfarmers’__________.Theymakewebswith___________,whichis__________,________and__________.Scientistsplantousespidersilkin__________,etc.Theirpoisoncanbeusedtotreat______________.Therefore,spidersare___________ofinsectsand__________ofhumans.insectssurvivesheltersinsectscropssilkstronglightelasticspacecraftbraindisordersenemiesfriendsWeshouldtrytounderstandthingsinnatureandnotdestroythem.