【谁可以帮我做几个英语阅读Animalsperformmanyusefulandentertainingjobs.Dogsareparticularlyvaluableinguidingtheblind(atraineddogcanlearnnevertocrossabusyroadwhencarsarecoming,evenifhismastercommandhimtodo】
谁可以帮我做几个英语阅读
Animalsperformmanyusefulandentertainingjobs.Dogsareparticularlyvaluableinguidingtheblind(atraineddogcanlearnnevertocrossabusyroadwhencarsarecoming,evenifhismastercommandhimtodoso),protectingproperty,findinglostpeople,andbuntingcriminals.Horsesareusedinguardingherds,carryingmeninlandswheretherearenoroads,andhelpingfarmersworktheirland.Pigeonshavelongbeenusedtocarrymessage.Wildanimalsfromthejungles,forestsandseasareverypopularperformersincircusesandmovingpictures.Peoplerealizethat,althoughanimalsmaynothavethesameintelligenceashumanbeings,theyaresmartenoughtolearncertainthings.
Thefirstthingadogistaughtistoobey.Itshouldnottaketoolongforhimtolearncommands.Simpleorders,suchas"sit,liedown,staythere,comehere,"canevenbetaughtbyachild.
Trainingadogtobewatchdogoftenproducesunexpectedresults.Somedogsquicklylearnthedifferencebetweenunwantedpeopleandfriends.Thisisbecausetheirmasterswelcomefriendsandinvitethemintotheirhouses.However,somedogswillalwaysattackthepostmenwhocomestodeliverletters.Oneexplanationforthisbehavioristhatalthoughthepostmancomestothehouseoften,heneverentersthehouse.Therefore,thedogthinksthepostmanissomeonewhoisnotwanted,butkeepscomingbackanyway.
Mastersofdogswhoattackpostmancaneasilyshowthedogthatthepostmanisafriendandthatthedogdoesnotneedtotreathimasanunwantedperson.Adogisquitereadytodowhathismasterwishes.Andadogisalwayshappywhenheispraisedforunderstandingcorrectly.
16.Adogfeelshappiestif,afterhehasworkedwell,___b_____.
A.hegetsagoodpieceofmeat
B.hegetspraisefromhismaster
C.heisallowedtobebyhimself
D.heistakenforawalk
17.Dogswhoaccompanyblindpeoplemustlearn_____c___.
A.toobeyallorders
B.toobeyonlysafeorders
C.nevertocrossbusyroad
D.tocrossroadswhencommanded
18.Whichofthefollowingshowstrainingawatchdogoftenbringaboutunexpectedresult?d
A.Somedogsattackguests.
B.Somedogsdon'tknowthepostman.