1、【题目】Although the Carbon 14 method of dating old objects is not foolproof , it is the best method available at present
选项:
A.whollyoperational
B.entirelyserviceable
C.fullyreliable
D.completelysafe
答案:
C
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】Oneofthegreatestbreakthroughsforprofessionalwomencamein1973whenthefieldofbankingopenedupforthem.
选项:
A.mostseriousdisappointments
B.mostsignificantadvances
C.mostabruptdeclines
D.mostcrucialsituations
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】TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
选项:
A.completelydestroy
B.carefullydisguise
C.sustain
D.contain
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】The fear of smallpox, which terrorized the eighteenth century, has no analogy(likeness) today.
选项:
A.occurrence
B.remnants残留物
C.witnesses
D.parallel
答案:
D
解析:
暂无解析
1、【题目】WhileBillieHolidaydidnotinventthemusiccalled"theblues",shemostassuredlyhelpedpopularizeit.
选项:
A.finally
B.certainly
C.earnestly
D.enthusiastically
答案:
解析:
1、【题目】Whencarbonisaddedtoironintheproperproportions,theresultissteel.
选项:
A.container
B.sequence
C.laboratories
D.amounts
答案:
解析:
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