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eviouslyavailableforamonthatmost,,,(定家具)inmosthomesandremainedsountilthemechanizedrefrigeratorreplaceditinthe1920sand
1930s.
(淀粉)orcarbohydrates(碳水化合物；糖类),,manyfamiliescouldtakeadvantageofpreviouslyunavailablefruits,vegetables,anddairyproductstoachievemorevariedfare(饮食).
Duringthe1860s,cannedfoodproductswere_____.
unavailableinruralareas
shippedinrefrigeratorcars
availableinlimitedquantities
astaplepartoftheAmericandiet
Itcanbeinferredthatrailroadrefrigeratorcarscameintouse_____.
A)before1860B)before1890
C)after1900D)after1920
’
A)decreasedinnumberB)wereonanirregularschedule
C)increasedincostD)occurredonlyinthesummer
A)dryingB)canningC)coldstorageD)chemicaladditives
Whatdoesthepassagemainlydiscuss
Causesoffoodspoilage.
Commercialproductionofice.
InventionsthatledtochangesintheAmericandiet.
Populationmovementsinthenineteenthcentury.
Passage2
Questions36to40arebasedonthefollowingpassage.
Mostpeoplethinkofacamelasanobedientbeastofburden,,.
TheArabsassert(断言)thatcamelsaresoacutelyawareofinjusticeandilltreatmentthatacamelownerwhopunishesoneofthebeaststooharshlyfindsitdifficulttoescapethecamel’s