Nowadays many scientists depend on radiocarbon for dating age-old objects. Radiocarbon is reliable in dating an object back to

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问题 Nowadays many scientists depend on radiocarbon for dating age-old objects.
Radiocarbon is reliable in dating an object back to at least 50,000 years.

选项 A、Right
B、Wrong
C、Not mentioned

答案A

解析答案见文章倒数第二段最后一句：Most scientists agree that this ratio is useful for dating items back to at least 50,000 years．

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本试题收录于：职称英语理工类B级题库职称英语分类

职称英语理工类B级

职称英语

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Nowadays many scientists depend on radiocarbon for dating age-old objects. Radiocarbon is reliable in dating an object back to

职称英语理工类B级

职称英语

ExerciseWhetherornotexerciseaddstothelengthoflife,itiscommonexperiencethatacertainamountofregularexerci

TheWorld’sBest-SellingMedicineSinceancienttimes,peopleallovertheworldhaveusedwillowtostoppain.Thewillowt

EarlyorLaterDayCareTheBritishpsychoanalystJohnBowlbymaintainsthatseparationfromtheparentsduringthesensitiv

HowTwoGreatConflictsHelpedtoChangeEuropeNinetyyearsagoonasunnymorninginNorthernFrance,somethinghappenedt

Lookingtohelptheenvironment?Considerthefollowingsimpleideas.Turnoffelectricaldeviceswhenthey’renotbeinguse

Theblazehasblackenedabout389,000acresanddestroyed11buildings.

DungtodeathFieldsacrossEuropearecontaminatedwithdangerouslevelsoftheantibiotics(抗生素)giventofarmanimals.The

Alargesumofmoneyhasbeenallocatedforbuyingnewbooksforthelibrary.

Thenurseryisbrightandcheerful.

ATheCostofConvenienceBASurprisingAnswerGivenbytheEconomistsCTheEffectofInflationDMiddlemen’sLimitedSharein

对监理实绩的考核是在对()的基础上，通过对设备工程的现场观察、检测、调查了解，以检验和评价监理机构和现场专业监理组对设备实施监控所取得的实际效果。

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