Unit 5 课文阅读理解 外研版 2019 必修第一册

外研版必修第一册Unit5课文阅读理解eq\x(Step1Fast­reading)Ⅰ.Readthepassagequicklyandfillinthefollowingblankswithsuitablewords.Ⅱ.Themainideaofthepassageisabout_____________________________________________.astudyonthemigrationbehaviourofthemonarchbutterflyandthesignificanceofthestudyeq\x(Step2Careful­reading)Ⅰ.Tellwhetherthefollowingstatementsaretrue(T)orfalse(F)．1．Everyautumnthemonarchbutterflybeginsajourneytothenorth.()2．Thetimeofthedayandthepositionofthesuncanmakesurethemonarchbutterflymigratesintherightdirection.()3．Whenthesolutiontothemysteryofthemonarch’sabilitywasrevealed，ithadalargenumber.()4．Peoplehaveabetterunderstandingofthemonarch’sbehaviournow.()5．Thedeepertheresearch，themorelikelythemonarchbutterflyistosurvive.()1-5FTFTTⅡ.Readthepassagecarefullyandchoosethebestanswer.1．Whatisthemainpurposeofthefirstparagraph?A．Totelluswhatmigrationisexactly.B．Totellusthereasonformigration.C．Tointroducethetopicofthepassage.D．Totellushowmanyanimalsmigrate.2．Themonarchbutterflymigratestoeveryautumn.A．findapartnerB．spendthewinterC．tellthetimeofdayD．measurethepositionofthesun3．WhatwillprobablyhappentotheNorthAmericanmonarchbutterflyifitiscloudy?A．Itmayloseitsway.B．Itcan’tseeanything.C．Itcan’tfindanyfood.D．Itwillfeelverycold.4．Whatdoestheword“crash”inPara.4mean?A．Succeed. B．Fail.C．Increase. D．Drop.5．Whichsectionisthisarticlelikelytoappearinthenewspaper?A．Sports. B．Health.C．Hobby. D．Wildlife.答案CBADDeq\x(Step3Post­reading)Ⅰ.Afterreadingthepassage，pleasefillinthefollowingblanks.Everyautumnmillionsofmonarchbutterfliesbegin1._______longanddifficultjourney.Theymanage2.________(travel)around4,000kilometressouthtoplaces3._______theywillspendthewinter.Ateamofscientists4._______(lead)byProfessorEliShlizermanhasfoundoutthesolution5.____themysteryofthemonarch’samazingability.Inthelastfewyears，thenumberofmonarchbutterflies6.________(crash)byninetypercent.Humanactivityisthemainreason.Peoplearedestroyingthenaturalenvironmentby7.______(cut)downtreesandusingchemicalsthatkilltheplantsthatmonarchcaterpillarseat.Soabetter8.__________(understand)ofthemonarch’sbehaviourhasledtoagreater9._________(aware)ofthiscreature.Peoplehavebeenworkingtomakesurethatthereareenoughplantsforthemtofeedon.Themoreweknowaboutthesedelicatecreatures，the10._________(great)thechancetheywillsurvive.a2.totravel3.where4.led5.to6.hascrashed7.cutting8.understanding9.awareness10.greaterⅡ.Discusswithyourpartnerandthenanswerthefollowingquestions.1．Whatmeasuresshouldbetakentoprotectthemonarchbutterfly?2．DoyouknowanyendangeredrareanimalsinChina?Howtoprotectthem?eq\x(Step4Sentence­learning)1．Thesetwopiecesofinformation—thetimeofdayandthepointwherethesunisinthesky—allowthebutterflytodeterminethewaytogo.________________________________________________________________________2．Theycutdowntreesandusechemicalsthatkilltheplantsthatmonarchcaterpillarseat.________________________________________________________________________Ifthisworks，theremaycomeatimewhenthenumberofmonarchbutterfliesincreasesonceagain.________________________________________________________________________Themoreweknowaboutthislovelycreature，thegreaterthechanceitwillsurviveandkeepitsplaceinthenaturalworldforalongtimetocome.________________________________________________________________________1[句式分析]本句为复合句。破折号解释说明twopiecesofinformation的内容。where引导定语从句，修饰先行词thepoint，where在定语从句中作地点状语。[自主翻译]这两条信息——一天中的时刻和太阳在天空中的位置——让黑脉金斑蝶能够判定前进方向。[2句式分析]句中含有两个定语从句分别修饰先行词chemicals和theplants。[自主翻译]他们砍伐树木，他们所用的化学制剂杀死了黑