1、【题目】Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.
选项：
A.hand-carved
B.roughlymade
C.flat
D.heavy
答案：
解析：
1、【题目】 Communication is one of the most important bonds that hold cultural systems together.
选项：
A.obligations
B.qualities
C.links
D.needs
答案：
C
解析：
暂无解析
1、【题目】Oneofthegreatestbreakthroughsforprofessionalwomencamein1973whenthefieldofbankingopenedupforthem.
选项：
A.mostseriousdisappointments
B.mostsignificantadvances
C.mostabruptdeclines
D.mostcrucialsituations
答案：
解析：
1、【题目】Insectpestsareamongtheleadingcausesofcropfailure.
选项：
A.expected
B.chief
C.natural
D.least
答案：
解析：
1、【题目】Insect pests are among the leading causes of crop failure.
选项：
A.expected
B.chief
C.natural
D.least
答案：
B
解析：
暂无解析
1、【题目】Alligators still exist in some of the dank 潮湿 swamps and bayous小海湾 of Alabama's coastal regions.
选项：
A.weirdly古怪的fascinating
B.mythical
C.drab(monotonous)
D.unpleasantlyhumid
答案：
D
解析：
暂无解析
1、【题目】Blue－greenalgaegrowabundantlyinsaltmarshes.
选项：
A.primarily
B.slowly
C.onplants(cultivate)
D.ingreatnumbers
答案：
解析：
1、【题目】Bats fly, rather than glide, and thus are the only mammals capable of true flight.
选项：
A.straight
B.safe
C.real
D.rapid
答案：
C
解析：
暂无解析
1、【题目】Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
选项：
A.schemes
B.means
C.tracks
D.variables
答案：
解析：
1、【题目】The Salk vaccine is a major factor in the fight to eradicate polio.
选项：
A.completelydestroy
B.carefullydisguise
C.sustain
D.contain
答案：
A
解析：
暂无解析
1、【题目】 All living organisms, regardless of their unique identity, have certain biological, chemical, and physical characteristics in common.
选项：
A.asaresultof
B.considering
C.cognizantof(consciousof,awareof)
D.whatever
答案：
D
解析：
暂无解析
1、【题目】InthenortheasternUnitedStates,itrainsintermittently间歇地throughoutthespring.
选项：
A.steadily
B.abundantly
C.periodically
D.daily
答案：
解析：
1、【题目】The future survival of the bald eagle is still an important American ecological concern.
选项：
A.migration
B.population
C.existence
D.evolution
答案：
C
解析：
暂无解析
1、【题目】Double Eagle in the first transatlantic balloon, was greeted by avid crowds in France.
选项：
A.eager
B.surging
C.appreciative
D.vigorous
答案：
A
解析：
暂无解析
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