25分钟限时阅读天天练

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1、古之成大事者不唯有超世之才，亦有坚忍不拔之志。-苏轼25分钟限时阅读天天练第一天慧雅，做完后，不熟悉的单词，划出来，有意识的抄在问题集结本上，留给我上课讲解。（大年初二）ADoyouknowwhydifferentanimalsorpests(昆虫)havetheirspecialcolors?Colorsinthemseemtobeusedmainlytoprotectthemselves.　Somebirdslikeeatinglocusts(蝗虫),butbirdscannoteasilycatchth

2、em.Why?Itisbecauselocustschangetheircolorstogetherwiththechangeofthecolorsofcrops.Whencropsaregreen,locustslookgreen.Butastheharvesttimecomes,locustschangetothesamebrowncolorascropshave.Someotherpestswithdifferentcolorsfromplantsareeasilyfoundandeatenbyothe

3、rs.Sotheyhavetohidethemselvesforlivesandappearonlyatnight.　Ifyoustudytheanimallife,you’llfindthemainuseofcoloringistoprotectthemselves.Bears,lionsandotheranimalsmovequietlythroughforests.Theycannotbeeasilyseenbyhunters(猎人).Thisisbecausetheyhavethecolorsmuch

4、likethetrees.　Haveyouevernoticedanevenstrangeract?Akindoffishintheseacansendoutakindofveryblackliquid(液体)whenitfacesdanger.Whiletheliquidspreadsover(散开),itsenemies(敌人)cannotfindit.Anditimmediatelyswimsaway.Soithasliveduptonowthoughitisnotstrongatall.1.Fromt

5、hepassagewelearnthatlocusts____.A.aresmallanimalsB.areeasilyfoundbybirdsC.aredangeroustotheirenemiesD.changetheircolorstoprotectthemselves2.Howcanpestswithdifferentcolorsfromplantskeepoutofdanger?A.Theyrunawayquickly.　　B.Theyhavethecolorsmuchliketheirenemie

6、s.C.Theyhidethemselvesbydayandappearatnight.　　D.Theyhavetomovequietly.3.Bearsandlionscankeepsafebecause____.A.theyhavethecolorsmuchlikethetreesB.theymovequietlyC.theylikebrownandgraycolorsD.theyliveinforests4.Whycanthekindoffishliveuptonow?A.Becauseitisvery

7、andstrong.B.Becausetheliquiditsendsoutcanhelpitescapefromitsenemies.C.Becausetheliquiditsendsoutcankillitsenemies.D.Becauseitswimsfasterthananyotherfish.5.Whichisthebesttitleforthispassage?A.TheChangeofColorsforAnimalsandPests　　B.ColorsofDifferentAnimalsand

8、PestsC.TheMainUseofColorsforAnimalsandPests　　D.SomeAnimalsandPestsB　It’simportanttolearnaboutprotectingourenvironment.Hereisa5Rruleforus:1.Reduce　Ifyouwanttoreducewaste,youshouldusethingswisely(明智地).Al