职称英语真题《卫生A》补全短文职称英语真题《卫生A》补全短文精选职称英语考试中，补全短文是职称英语试卷上比较难的题型之一。该题型共1篇文章，5道小题，所占分值为10分。下面是yjbys网小编提供给大家关于职称英语真题《卫生A》补全短文精选，希望对大家的备考有所帮助。ToadsareArthritisandinPainArthritisisanillnessthatcancausepainandswellinginyourbones.Toads,abigprobleminthenorthofAustralia,aresufferingfrompainfularthritisintheirlegsandbackbone,anewstudyhasshown.Thetoadsthatjumpthefastestaremorelikelytobelargerandtohavelongerlegs.46Thelargeyellowtoads,nativetoSouthandCentralAmerica,wereintroducedintothenorth-easternAustralianstateofQueenslandin1935inanattempttostopbeetlesandotherinsectsfromdestroyingsugarcanecrops.Nowupto200millionofthepoisonoustoadsexistinthecountry,andtheyarerapidlyspreadingthroughthestateofNorthernTerritoryatarateofupto60kmayear.Thetoadscannowbefoundacrossmorethanonemillionsquarekilometers.47AVenezuelanpoisonviruswastriedinthe1990sbuthadtobeabandonedafteritwasfoundtoalsokillnativefrogspecies.ThetoadshaveseverelyaffectedecosystemsinAustralia.Animals,andsometimespets,thateatthetoadsdieimmediatelyfromtheirpoison,andthetoadsthemselveseatanythingtheycanfitinsidetheirmouth.48Aco-authorofthenewstudy,RickShine,aprofessorattheUniversityofSydney,saysthatlittleattentionhasbeengiventotheproblemsthattoadsface.Rickandhiscolleaguesstudiednearly500toadsfromQueenslandandtheNorthernTerritoryandfoundthatthoseinthelatterstatewereverydifferent.Theywereactive,sprintingdownroadsandbreedingquickly.Accordingtotheresultsofthestudy,thefastesttoadstravelnearlyonekilometeranight.49Butspeedandstrengthcomeataprice-arthritisofthelegsandbackboneduetoconstantpressureplacedonthem.Inlaboratorytests,theresearchersfoundthatafterabout15minutesofhopping,arthritictoadswouldtravellessdistancewitheachhop(跳跃).50Thesetoadsaresoprogrammedtomove,apparently,thatevenwheninpainthetoadstravelledasfastandasfarasthehealthyones,continuingtheirrelentlessmarchacrossthelandscape.A.Butthisadvantagealsohasabigdrawback--upto10%ofthebiggesttoadssufferfromarthritis.B.Thetasknowfacingthecountryishowtoremovethetoads.C.Butarthri