TheUnitedStatesDepartmentofAgriculturehasaprogramcalledWildlifeServices.Itsjobistohelpprotectagriculturalandotherresourcesfromthreatsanddamagebywildlife.Oftenthatmeanshelpingfarmersdealwithunwelcomevisitors.

　　TheUnitedStatesDepartmentofAgriculturehasaprogramcalledWildlifeServices.Itsjobistohelpprotectagriculturalandotherresourcesfromthreatsanddamagebywildlife.Oftenthatmeanshelpingfarmersdealwithunwelcomevisitors.

　　OneexamplefromWildlifeServicesofitsworkconcernedafarmerinWashingtonStateinthePacificNorthwest.SeveralyearsagothousandsofCanadageeselandedonhisfields.Thegeesebegantoeathiscarrotcrop.

　　Biologistsfromtheprogramsuggestedthatthefarmerusenoise-makingdevicesandothermeasurestoscarethelargebirdsaway.Theseeffortssucceeded.

　　WildlifeServicesalsohasalivestock(家禽)protectionprogram.Theagencykillsfoxeswolvesandotherpredators(食肉动物).Somepeoplehoweverwhoareagainstitsaytoomanyanimalsarekilledthatdonotdoharmtolivestock.

　　TheWildlifeServicesprogramispartoftheAnimalandPlantHealthInspectionService(APHIS).APHISofferssomesuggestionsofwaystokeepawaypredators.

　　Forexampletrytokeepfoodandwatersafefromwildlife.Fencesmayhelpkeepoutwolvesespeciallyifthefencesareatleasttwometershigh.Forbestresultsthebottomofthefenceshouldextend(延伸到)aboutfifteencentimetersintotheground.

　　Theexpertsalsosuggestusinglightsaboveplaceswhereanimalsarekept.Andtheyadvisepeoplewhoseewolvesaroundtheirpropertytochasethemawaybyshoutingmakingloudnoisesorthrowingrocks.

　　Forhomegardenersatwo-meterfencemighthelpkeepoutdeer.Tokeepoutrabbitsawirefencehastobeonlyaboutahalf-meterhigh.Itshouldextendoverfifteencentimetersundergroundtokeeprabbitsfromdiggingunderit.

　　29.WhichofthefollowingisWildlifeServicesexpectedtodoaccordingtothepassage?

　　A.Toprotectwildlifethatisindanger. B.Tohelpfarmersdealwithunwelcomewildlife.

　　C.Tohelpfarmerswhosefamiliesarepoor D.Tokillunwelcomewildlife

　　30.Whyisthefarmermentionedinthesecondparagraph?

　　A.ToshowhowWildlifeServiceswassetup. B.Toshowwhatserioustroublefarmersarein.

　　C.ToshowwhatWildlifeServicesdoes D.ToshowhowharmfulCanadageeseare.

　　31.Whyaresomepeopleagainsttheli