CIntheearlydaysofhumanhistory,peoplelivedbyhuntingwildanimals,orgatheringwildgrainsandplantsforfood.Then,somepeoplelearnedtogrowcropsandraiseanimalsforfood.Theywerethefirstfarmers.

　　C

　　Intheearlydaysofhumanhistory,peoplelivedbyhuntingwildanimals,orgatheringwildgrainsandplantsforfood.Then,somepeoplelearnedtogrowcropsandraiseanimalsforfood.Theywerethefirstfarmers.

　　Sincethesixteenthcentury,thewordfarmhasmeantagriculturalland.Butamucholdermeaningofthewordfarmislinkedtoeconomics.ThewordfarmcomesfromtheLatinword,firma,whichmeansanunchangingpayment.

　　ExpertssaytheearliestmeaningoftheEnglishwordfarmwasayearlypaymentmadeasataxorrent.

　　FarmersinearlyEnglanddidnotowntheirland.Theypaideveryyeartouseagriculturallands.

　　Beansareapopularfarmcrop.Butbeansareusedtodescribesomethingofverylittlevalueintheexpression,notworthahillofbeans.Theexpressionisoftenusedtoday.Youcouldsay,forexample,thatabadideaisnotworthahillofbeans.

　　LanguageexpertCharlesEarleFunksaidtheexpressionwasfirstusedalmostsevenhundredyearsago.HesaidRobertofGloucesterdescribedamessagefromtheKingofGermanytoKingJohnofEnglandasaltogethernotworthabean.

　　49.Intheearlydaysofhumanhistory,howdidpeoplelive?

　　A.Byraisinganimals. B.Byhuntingwildanimals.

　　C.Bygrowingcrops. D.Bysellingplants.

　　50.Whatisthemucholdermeaningof“farm”linkedto?

　　A.Agriculture. B.Industry. C.Economics. D.Changingpayment.

　　51.Whatdoestheexpression“notworthahillofbe