1、【题目】Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.选项：A.hand-carvedB.roughlymadeC.flatD.heavy答案：解析：1、【题目】Bythenineteenthcentury,emb...

1、【题目】Withtheacquisitionofsmallercompaniesbylargerones,the1960'ssawawaveofnewconglomerates.选项：A.surgeB.handfulC.suspensionD.dissolution分解答案：解析：1、【题目】F...

1、【题目】Blue－greenalgaegrowabundantlyinsaltmarshes.选项：A.primarilyB.slowlyC.onplants(cultivate)D.ingreatnumbers答案：解析：1、【题目】Insectpestsareamongtheleadingc...

1、【题目】Cometsarestillregardedwithawebysomepeople.选项：A.wonderB.concernC.resentmentD.detachment答案：A解析：暂无解析1、【题目】In1861itseemedinevitablethattheSouthernst...

1、【题目】InthenortheasternUnitedStates,itrainsintermittently间歇地throughoutthespring.选项：A.steadilyB.abundantlyC.periodicallyD.daily答案：解析：1、【题目】Howmanypeopl...

1、【题目】Themegaphone(microphone)makesthevoicesoundlouderbecauseitpointssoundwavesinonedirectionandkeepsthemfromspreadingoutinalldirections.选项：A.slitheri...

1、【题目】Insectpestsareamongtheleadingcausesofcropfailure.选项：A.expectedB.chiefC.naturalD.least答案：B解析：暂无解析1、【题目】Someseaurchins海胆havevenomous(toxin)spines选...

1、【题目】TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.选项：A.completelydestroyB.carefullydisguiseC.sustainD.contain答案：A解析：暂无解析1、【题目】Incalculating...

1、【题目】Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.选项：A.schemesB....

1、【题目】WhileBillieHolidaydidnotinventthemusiccalled"theblues",shemostassuredlyhelpedpopularizeit.选项：A.finallyB.certainlyC.earnestlyD.enthusiastically答案...