2019-2020年高中英語閱讀理解 第四部分 動(dòng)物世界(一)練習(xí)

1、2019-2020年高中英語閱讀理解第四部分動(dòng)物世界（一）練習(xí)北歐一些國家有一種老鼠，不僅繁殖能力強(qiáng)，而且特別喜歡遷徙，其頻率之高、速度之快，令人們瞠目而困惑。為何這種老鼠不像我們的家鼠一樣喜歡呆在一個(gè)特定的地方，而不辭辛苦地挪窩呢？請看這篇文章，它會(huì)告訴你什么。InsomeNorthEuropeancountriessuchasNorwayandSweden,thereisakindofratscalledtravelingrats,whichproducetheiryoungsevenoreighttimesayear.Theyoungwillgrowupinaboutsixmonthsa

2、ndproducetheirownyoung.So,inafewyearstheseratsincreaseingreatnumbers.Usuallytheylivetogetherinholesinthedepthofhighmountainsandliveongrassandrootsoftrees.Whatisstrangeisthateverythreeorfouryears,theywillmigrateinthousandsoreveninmillions,leavingafewofthemintheiroriginallivingplace.Themigrationmainly

3、goesonatnight.Indaytime,theyeatandrest.Atnight,theygojuststraightforward,evenifthereisariverbeforethem:theratsinthefrontwilldrownthemselveswhiletheonesafterthemwillmaketheirwayonthebodiesofthedrownedrats.Sometimesthenumberofthemovingratsmaydecreasebecauseofillness,badweatherorattacksfromeagles,wolve

4、sandsoon.Oncetheyreachtheseaside,theykeeponfearlesslyandgetdrownedtothelastoneofthem.Whydotheymakesuchamigration?Somesuggestthattheremaybetoomanyofthemtofindfood.Somesuggestthatthemigrationistheresultofthebadtemperoftherats.Butalltheseremaintobeproved.prehensionQuestions:1. Usuallyatwo-year-oldtrave

5、lingratmayhavehaditsbabiesattheleast.A.twiceB.seventimesC.tentimesD.fourteentimes2.Whatdotravelingantsfeedon?_A.Grassandrootsoftrees.B.Cropssuchascorn,rice,andwheat.C.Grass,rootsoftreesandfishesinthesea.D.Rootsofgrass,treesandflowers.2. CanPenguinsFly?企鵝會(huì)飛嗎?企鵝會(huì)飛嗎？估計(jì)我們沒有人在現(xiàn)實(shí)中或者在電視上看到過，不過它們確實(shí)屬于鳥類。它們的翅

6、膀哪里去了？翅膀退化后變成了什么？它們的生活為何離不開水？小企鵝又是怎么被撫養(yǎng)起來的？企鵝的生活本身有許多有趣之處，讓我們帶著興趣走進(jìn)文章。Penguinsarebirdswholosttheabilitytoflymillionsofyearsago.Thesebirdsaresuchgoodswimmersthattheyseemtoflyalonginthewater.Theyareasgracefulandswiftunderwaterasotherbirdsareintheair.Penguinscanreachspeedsof15milesanhour,usingtheirflip

7、persaspaddles,muchlikeotherbirdsusingtheirwingsintheair,fortheseflippersactuallydevelopedfromwings.Penguinssteerandchangedirectionswiththeirfeetandtails.Penguinstravelbeneaththesurfaceofthewaterlookingforfood.Alltheirfoodesfromthesea,andtheyhuntfish,shrimp,andsquid.Penguinscandive300feetdownintothew

8、ater,buttheymustsurfaceforair.Theyspendmonthsatseawithoutreturningtotheland.Onland,theyhop,waddle,walkorslideontheirbelliesiftheywanttogofaster.Theyclimboutofthewatertorest,tolaytheireggs,toraisetheiryoung,andtoescapetheirenemies.ThefemaleEmperorpenguinesonland,laysoneeggonthebareice,thenimmediately

9、returnstotheocean.Themalekeepstheeggwarmfortwomonthsuntilithatchesbyrollingitontohiswebbedfeetandcoveringitwithhisfattylowerbelly.Duringthistwomonthsperiod,themaledoesnoteat!prehensionQuestions:1. ThepenguinA. canflythoughithasnowings.B.cannotflythoughitbelongstothebirdfamily.C.canflybecauseitusedto

10、beabird.D.maybecalledafishbecauseitcanliveinthewater.2. Penguins'presentflippersweremillionsofyearsago.A. theirpaddlesB.theirfeetC.theirwingsD.theirtails3. Whenapenguinisgoingtochangeitsdirection,itwilldependonitsA. feetandtails.B.flippersandfeet.C.wings.D.eyes.4. Bywhatmeanswillapenguingofastes

11、t?A. Byhopping.B.Bywaddling.C.Bywalking.D.Byslidingonhisbelly.5. Whatwillapenguinprobablydoifhewantstogetfreefromhisenemy?A. Itmayreturntotheland.B.Itmaypretendtolayanegg.C.Itmustfightwithitsenemy.D.Itmaystaystilldeepinthewater.3.TheChvlIsANightBird貓頭鷹是夜岀活動(dòng)的鳥(BCADA)貓頭鷹在你的眼中是不是有種靈性？在漆黑的夜晚，它那犀利的眼光能夠準(zhǔn)確

12、而迅速地捕捉到獵物，是何原因？其夜晚出沒的生活習(xí)性中究竟隱含著什么秘密？貓頭鷹幾乎專以鼠類為食，是重要的益鳥，而且貓頭鷹是唯一能夠分辨藍(lán)色的鳥類。由于它們的外貌丑陋，叫聲凄厲，給人以恐怖的感覺，因而招致一些人的厭惡，甚至有一些迷信傳說，認(rèn)為它是不吉利的鳥，其實(shí)都是不正確的。讓我們一起來看看這篇文章，它會(huì)告訴你什么信息。Theowlisabirdthatfliesatnight.Becauseofitsverysoftfeathers,itfliesassilentlyasabreeze,swoopingdownonmice,gophers,rats,andsometimesevenonsuch

13、largeanimalsasrabbitsandsquirrelsandskunks.Itcatchestheminitslong,strongclaws.Inasinglenightsomeowlscaneattheirownweightinmiceandrats.Owlsarebig.Owlsarelittle.Someareasbigasafireplug.Somearesosmallthattheywouldfitinyourpocket.Butdon'ttrytpoutonethere,oryouwillgetscratchedandbitten!North,south,ea

14、st,andwestowlslivealmosteverywhere.Someliveinforestsorparks,probablyclosetowhereyoulivemaybeeveninyourownbackyard.Listen,andyoumighthearoneatnight.Someowlsmakebeautiful,sadmusic.Owlscanseebetteratnightthanmostanimals,andtheyhuntfortheirfoodintheduskanddark.Theysleepduringtheday,hiddenamongthetreebra

15、nches.Ifyoufoundanowlinthedaytimesittingonatreebranch,youmightthinkatfirstitwasn'treal.Itwouldprobablyjustsittherenotmovingafeather.Itwouldn'tevenmoveitseyes.Itcouldn'tbecauseanowl'seyescannotmove.Theonlywayanowlcanlookaroundistoturnitshead.Butitcanturnitsheadalmostallthewayaround.An

16、ditcanturnitsofastthatyoucanhardlyseeitmove.Peoplesayowlsmakesoundsofwhoo-whoo-whoo,andsomedo.Butowlsalsomakesoundslikethoseofotheranimals:Somemeowlikeakitten,yaplikeapuppy,orhisslikeasnake.Sometimeswhenowlsmaketheirsounds,theyfrightentheanimalstheyarehunting.Theanimalsgivethemselvesawaybyrunning.Th

17、entheowlscatchthem.anySomepeoplesayowlsarewise,butthereisnoproofthatowlsaresmarterthanotherbird.CompreheusiouQuestions:1.Theclawsofanowlare4A. bothshortandweak.B.bo±loneandstrong.-*-1C.shortbut打on隊(duì)D.Ion?butweak.11. Thesentenc?:'Inasinglenight;omeowlscaneattheirweightinmiceandrats.:meansA. V

18、hentheyarehungryinacertainnight,someowlsmayalsoeatpartsoftheirmvubodiesC.Inonlyonenightanowlisabletocatchandeatmanymiceandratswhichwillweighasmuchasitsownweight.D.Inacertainnight,someowlsmaybeeatenbymiceandrats.3. Ifanowlwantstoseewhat'sontheleft,itwillA.turnitshead.B.turnitseyes.C.eitherturnits

19、headorturnitseyes.D.feelitwithitsclaws.4. Whichoftheowl'scharacteristicshelpsitcatchanimalseasilyatnight?A.Itfliesassilentlyasabreeze.B. Itcanseebetteratnightthanmostanimals.C. Itcansometimesmakedifferentsoundstofrightentheanimals.D. Alltheabove.5. Whichofthefollowingstatementsistrueaccordingtot

20、hepassage?A.Owlscanflywithoutmakinganynoise.B. Owlsmaybefoundbyotheranimalseasily.C. Owlsareamongthesmartestbirdsintheworld.D. Owlsneednotsleepatall.(BCADA)4. ButterfliesAreVeryBeautifulInsects蝴蝶是美麗的昆蟲人們總會(huì)用美麗的蝴蝶作為美麗環(huán)境的陪襯。它們輕盈的身姿、曼妙的身影、優(yōu)美的舞動(dòng)，令人贊嘆大自然的美麗。然而蝴蝶除了美麗的外表，還有擬態(tài)的生存策略、有趣的生活習(xí)慣，快來看看下面的文章吧。Butterf

21、liesareverybeautifulinsects.Theybelongtothebutterflyfamily.Wecanseetheminthedaytime.Whenweenjoyflowers,we'llseethemflyingaround.Theylookmorelovelythantheflowers.Butbutterfliesarenotonlyfriendsoftheplants,butalsoenemiesofthem.Butterfliesaremonallovertheworld,buttheonesinhotcountriesareusuallybigg

22、erandmorebrightlycoloredthanthoseincoolercountries,andtherearedifferentkinds.Usuallythemalebutterflyismorebrightlycoloredthanthefemale.Thefemaleshavebiggerandheavierbodies,sincetheycarrytheeggs.Thegaycolorsofthemalehelptoattractthefemaleanddullercolorsofthefemalemakethemlesslikelytobecaughtbytheenem

23、iesbeforetheyhavelaidtheireggs.Som?butterflieshaveabrightpatternofcolorsontheuppersurfaceoftheirwingswhichwhentheyfly,but社:hentheyrestonatr亡芒orleaf,theyc'ose±eirwings.Ontheundersidesoftheirvings±erearegreenandbroTimakingswhichlooklike±eTreeorleaves.Theyare±endifficulttosee.Th

24、ebestexamplectfthisistheDeadLeafButterfly.Vhenitswingsareclosed,itlooksexactlylikeadeadleaf.Thereareevenmarks±atlookliketh亡holesinadeadleaf.Whenabirdiischasingabutterfly,anditclosesitswings,itseemstohav?disappearedcompletely.*-1Manybutterflieshaveroundmarksontheirwingsthatlooklikeeyes.Whentheya

25、reresting,andtheirwingsarefolded,thesecannotbeseen.Whenabirdseesone,andbeginstoattackit,thebutterflyopensitswings.Thebirdthinksthatitseestwoeyesstaringathim,andfrightened,itfliesaway.prehensionQuestions:1. Whichofthefollowingislikelytobethemostbrightlycolored?A. Afemaleinahotcountry.B.Amaleinacoolco

26、untry.C.AdeadleafbutterflywithitswingsclosedD.Amaleinahotcountry.2. ThegaycolorsofthemalehelptoA. frightenbirdsaway.B.bringfemalestoit.C.makeitmoredifficulttosee.D.protectthefemale.3. FemalebutterfliesaresaferfromenemiesbecausetheyA.arebigger.B.areheavier.C.cannotbeseenwiththeirwingsclosed.D.havecol

27、orsthatarenotsobright.4. Whichofthefollowingstatementsisnottrueaccordingtothepassage?A. Therearenotsomanykindsofbutterfliesincoolcountriesasinhotcountries.B. Malebutterfliesusuallyweighlessthanfemaleones.C. Allbutterfliescannotbeseenwhentheyclosetheirwings.D. Birdsareenemiesofbutterflies.5. Whichoft

28、hefollowingstatementsistrueaccordingtothepassage?A. Themalebutterflyisusuallybrighterthanthefemaleone.B. Abutterflyisalwaysbrightertoseewhenresting.C. TheDeadLeafButterflyhasholesinitswings.D. Whenabirdisabouttocatchabutterfly,thebirdclosesitswings.(BBDCA)5. WhyDoesTheMosquitoBiteYou?蚊子為何咬你呢夏天總會(huì)有討底的

29、蚊子在你的周圍，伺機(jī)尋找機(jī)會(huì)對你下手.但我們可能不知道蚊子為何咬我們口這篇文章會(huì)告訴你，蚊子咬你的一個(gè)主要原因是它們矍產(chǎn)卵，而血液則是產(chǎn)卵的必要條件.既然能產(chǎn)卵，那么咬人的蚊子就一定是個(gè)雌蚊了-它們是怎么咬我們的？玆枝疙瘩為什么會(huì)癢？別急，來看這篇文章，它會(huì)告訴你答案n4Ever:oneeverywhereinthewffldknowsthesmallinsectcalledthemosquito.Therearemorethan2,500kindsofthem：buton'ycertainkindsofthembitepeople,andtitcanbefoundallDoyoukn

30、owhowthefemalemosquitodecideswhomtobite?Shechooseshervictimscarefully.Firstsheusessensorstofindhervictim.Ifshelikeswhatshefinds,shebites.Butifyoudon'tappealtoher,she'llrejectyouforsomeonemoreappetizing.Thenexttimeamosquitobitesyou,justrememberthatyouwerechosen.Youarespecial.Whydoesamosquitob

31、iteitch?Theitchisnotreallyfromthebite.It'sfromclottingasshesucksitupherproboscistip.Bythetimetheitchingbegins,shehasgone.Andthenwhathappens?Well,afterherdeliciousdinner,themosquitoistired.Shejustwantstofindaplacetorest.Heavywithyourbloodshepicksaspootnaleaforawallorastonetoquietlylayhereggs.Just

32、onedropofbloodwillproducehundredsofeggs.Whereishermate?Well,theirrelationshipisover,andheisnolongeraround.Theirmatingtookplacebeforeshebityou.Shewillliveonetotwomonthsandlayeggsfourorfivetimesduringthistime.prehensionQuestions:1. SomemosquitoesbiteyoubecauseA.theyareunfriendlytoyou.B. youareverykind

33、tothem.C. theyneedbloodtoreproduce.D. youarespecialandlovedbythem.2. ItisdifficulttoseemosquitoesC.nearater.D.inc&ldvea±er.pA. iniLimmer.B.in貢啟autumn.3. Onlybiteapersonoranimalforblood.A. ±emalemosquitoesB.smallmosquitoes+2019-2020.年高中英語閱讀理解第四部分動(dòng)物世界（三）練習(xí)丄Fe“飛蛾撲火”是句成語。那么飛蛾為何這樣呢？這原來是昆蟲的一

34、種趨光性本能表現(xiàn)。蛾子飛近燈光后，它的兩只睛眼離光源的遠(yuǎn)近不同，一只眼睛比另一只眼睛感受到的光線強(qiáng)，它們不停地拐向光線更強(qiáng)的方向，這樣，它們就總是繞著圈子，盤旋著向燈光飛。XHaveoyOUeverwonderedghy一you0SfiSmothsflyingmostlyatnightandthenonlyaround】ights?It'sdearthatmothsareattractedtoHght.Butwhatdoyousupposethelightdoestothem?Here'sthecorrectanswer.Amoth'snervoussystemisex

35、tremelysensitivetolight.Itisbelievedthatlightcausesamothtoreduceitsmovements.Atnight,lighthittingonesideofthemothissensedbythemoth'seyes,stimulatingthenervoussystem.Thisproducesareflectionthatreduceswingmovementsonthesidefacingthelight.Whenthewingsonthatsideslowdown,theunevenwingbeatturnstheothe

36、rsideofthemothtothelight.Inthiswaythemothiscontinuallyturningnearalight.Duringdaylighthours,lightismuchstrongerandmoredirect,causingthemothtoremainmotionless.prehensionQuestions:1. What'sthemainideaofthepassage?A.TheflightofmothsB.Moths'eyesaresensitiveC.MothsandlightsD.Theeffectoflightonthe

37、flightofmoths2. LightcausesamothtomoveA.faster.B.around.C.uneven.D.slowly.3. Itisthatmakesamothflyatnight.A.lightB.darknessC.themoonD.daylight4. InpletedarknessmothsmostprobablyA.flyaboutfreely.B.reducetheirmovements.C.turncontinuouslyincircles.D.don'tflyatall.5. Whichofthefollowingstatementsisn

38、ottrueaccordingtothepassage?A.Lightcausesamothtostopitsflying.B. Lightcanreducewingmovementsonthesidebacktothelight.C. Mothsliketoflyatnight.D. Wecanattractmothswithlamps.(DDBAB)12.TheElephantIsTheLargestAdinialOnLand匸ms0大象是陸地上最大的動(dòng)物+J大象有著長長的鼻子，樁子般粗壯的腿，它龐大的身軀決定他們是陸地上靈大的動(dòng)物-然而，別看它門龐大，性情卻溫咂，而且特別喜歡群啟有著強(qiáng)勲

39、的家族觀念，感情豐富，亦是人英不可缺少的好朋友-下面的更章會(huì)告訴你關(guān)于大象的更多信息口4Theelephantisth亡largestofallth亡animalslivingontheland.Thebigandlongtrunkisratherlikeanarmandahand.Itcanusethetrunktopickuporputthingsinitsmouth,andalsotodrawupwater.Itsskinisthickandalmosthairless.Thetusksareinfactteethforcutting.Elephantsaregregarious.The

40、yliketomovefromoneforesttotheotherinherds,buttheirspeedisslowfrom15to20milesanhour.Elephantsarenotveryintelligent,andtheydonotseeorhearwell.Buttheyhavegoodmemoryandhavestrongsenseofsmell.ManyIndiansliketotrainthemtocarryheavythings.Elephant'slifeisgenerallybelievedlong,butnotveryknownexactly.Ele

41、phantsarevegetarians.Theyliveongrass,leavesandfruits.Theyarefondofbambooshoots,twigsorbarksoftrees.Everytimetheyeataquantityoffoodandwater.Therearetwokindsofelephants.OneisAsianelephant;theotherisAfricanelephant.TheAfricanelephantisbiggerandlikestoexposeunderthesun.AndtheAsianelephantismoreeasilytra

42、inedandpreferstoliveinshadyplaces.prehensionQuestions:1. TheelephantA. isthelargestanimalintheworld.B. islargerthananyotheranimalontheland.C. picksupandputsthingswithitstusks.D. caneasilyforgets.2. Weknowverywellthatanelephant'sskinisA.almosthairless.B.smooth.C.thick.D.alloftheabove.3. “Elephant

43、saregregarious.”Here“gregarious”meansthatA.elephantslikelivingtogether.B.elephantslikelivingalone.C.elephantseatvegetables.D.elephantsliveongrass.4. “Elephantsarenotveryintelligent.”Heretheword“intelligent”meansA.slow.B.fast.C.bright.D.foolish.5. ThedietoftheelephantisA.plantsonly.B.trees.C.meat.D.w

44、aterandplants.(BDACD)蟋蟀有一個(gè)秘密的窩蟋蟀是我們童年記憶中的玩斷給我們帶來了許多炊樂-它是一種聰明的動(dòng)斷它的覆刃臥于洞鬼或者在平地上鑿洞，它有一種更高明的辦法：利用地勢，打通地下的脈絡(luò).這樣的彊獲堅(jiān)硬，空間大，而且不易被發(fā)現(xiàn)-這種秘密的富究競是怎樣建成的？其中又有什企秘密？讓我們來看看這篇文章-屮Amongallof±einsects±er?isonlyonewhichhasapermanenthomeforbo±winterandsummer.In±ismatter±ecricketisluck7.Otherinsect

45、sstayinholesduringth巴badwea±er.Somebuildhomesfor±eirfami'ies,butsooneror'ater±e>7leave±esehomes.+JThecricketisacleverbuilder.Heneverusesacaveoraholeintheground,butdigshisownhousefromoneendtotheother.Hishouseisaslopingholeintheearthonsomewarmbank.Itisusuallysixtonineinc

46、hesinlength,andmaybeeitherstraightorbent.Thecricket'shomeisknownonlytothecricket.Theentranceisgenerallyhalfcoveredwithgrassandiskeptcarefully.Atthefarendofthepassageisabedroomwhichisalittlewiderthantherestandissweptandcleanedmorecarefully.Averysimplehome,youwillsay.Butitisclean,warm,dryandfortab

47、letothelifeofthecricket.Initthecricketlivesuntilitdies.prehensionQuestions:1. Asabuilder,thecricketisA.lucky.B.permanent.C.clever.D.hardworking2. Theentrancetothecricket'shomeisA.atthebedroomB.nevercleanC.noteasilyfound.D.easytofind.3. ThispassageisasawholeaboutA.thecricket'shouse.B.astrange

48、insect.C.howthehouseisbuilt.D.thelifeofthecricket.4. Hawdoesacrickethaveahome?A.Hebuildsithimself.B. Heusesaslopingholeintheearthonsomewarmbank.C. Helivesinadesertedhouse.D.Helivesinahousebuiltbyothers.5. Whichofthefollowingstatementsisnottrueaccordingtothepassage?A.Nootherinsectsoranimalsknowitshom

49、eexceptthecricketitself.B. Thebedroomiswiderthantherestofthecricket'shouse.C. Thecricket'shouseisclean,dry,warmandfortableeventhoughsimple.D. Thecricketistheonlyinsectthateverbuildsahome.(CCAAD)14.TheBatHasARadarInItsBody蝙蝠身上有只雷達(dá)人伯常用、飛禽走獸:一詞來形容鳥英和獸英，但這種說法有時(shí)卻并不一定正蹦，因?yàn)橛幸恍B類并不會(huì)飛，如鴕烏和企鵝等；同樣也有一些獸

50、英并不會(huì)走，如生活在海洋中的鯨英，而蝙蝠也是獸類，卻能像鳥類一樣在空中飛翔-塢蝠身上有:嚼達(dá)訂是的，怛這個(gè)雷達(dá)不是人英發(fā)明的機(jī)器，而是蝙蝠具備的特殊本領(lǐng)：利用聲波反射判斷周邊的環(huán)境，其反應(yīng)速度、準(zhǔn)確性令科學(xué)家贊嘆口蝙蝠沒有好的視力，俘卻有好的、雷達(dá):系統(tǒng)，它足以幫助蝙蝠在漆黑的環(huán)境中:淆淸:ho屮Batsaretheonlyflyingmammalsintheworld.Likebirds,batshavewings,andlikeanimals；theyhaveteeth,too.Batsusuallycatchpeststoeat.Abatcancatchtensofinsectsamin

51、ute.Sobatsareregardedasfriendsofthehuman.Batshaveeyes,buttheycan'tseeverywell,however,theyhavenotroubleflyingonthedarkestnightsandcatchingtheinsectsthattheywant.Howdobatsmanagetoflyandseeatnight?Theyflybyradar.Thebat'sradarsystemworksthesamewayastheonethatashiporaplaneuses.Liketheradiosignal

52、ssentbyashiporaplanethebatalsosendssignalsthatbouncebackwhentheyhitanobject.Asabatfliesthroughtheair,hesendsoutaseriesofsounds,thirtyorsixtypersecond.Thesoundscannotbeheardbythehumanear.Ifthesoundshitanobject,thesereturnedsoundsignalstellthebatwheretheobjectis.Thebat'sradarsystemisverygood.Tests

53、havebeenmadewithbatsincrowdedrooms.Blindinthenight,thebatscouldflyabouttheroomsandnevertouchanyobject.prehensionQuestions:1. FromthispassagewecanseethebatisA.abirdthatcanseeandflyatnight.B.afour-leggedbeastwhichlikestoeatinsects.C.aradartobeusedinshipsandplanes.D.ofbenefittothepeople.2. Batshavenotr

54、oubleflyingfasteverywhereonthedarkestnights,becauseA.theyhavestrongwings.B.theywantverymuchtogetsomeinsectstoeat.C.theyhaveakindofradarsystemtohelpthem.D.theyhavesharpeyes.3. Whichofthefollowingstatementsistrueaccordingtothepassage?A.Batshavenoeyesightatall.B.Batshavetwogoodeyes.C.Batshaveapooreyesi

55、ght.D.Batshavenotroubleseeingeverythingatnight.4. Whenbatsflythroughtheair,theyA.sendoutradiosignals.B.canseeallkindsofthings.C.hitobjectsandbounceback.D.sendoutsoundsignals.5. Whichofthefollowingstatementsisnottrueaccordingtothepassage?A.Thebats'radarsareusedinshipsandplanes.B. Thebatsofteneout

56、atnight.C. Thebatssendoutsoundsignalsatleastthreescoretimeseverysecond.D. Somebatshadtheirradarsystemstestedintherooms.(DCCDA)15.RatsAreMoreShyThanClever老鼠與其說聰明不如說膽小老鼠輕易不吃人椚放置的老鼠藥，所以人伯認(rèn)為老亂聰明口怛老鼠杲真因?yàn)橹朗硠?lì)有丟才躲幵的嗚？科學(xué)家通過研究發(fā)現(xiàn)事實(shí)并非如此：老亂是因?yàn)楹ε滦迈r事物才避幵老鼠藥的-老亂雖然行動(dòng)迅速，看上去似乎非常機(jī)靈，然而，'膽小如鼠:這句成語也并非無中生有，老鼠的膽小，可能比聰明有過之而無不及吧？心Ratseatourfoodormakeitsodirtythatitisn'tfitforpeopleatall.That'swh