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C级题库职称英语分类

职称英语理工类C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C级

职称英语

AcandidatesforclinicaltrialsBduringthetrialCmedicalknowledgeDinhumansEbeforeparticipationFforsomepatients

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TryingtoFindaPartnerOneofthemoststrikingfindingsofarecentpollintheUKisthatofthepeopleinterviewed,one

Since1955,lifeexpectancyratesintheU.S.haveComparedwiththecountrywiththelongestlifeexpectancy,theU.S.is

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A.10percentto25percentfortheproportionofworkerswhousedrugsoccasionallyonthejobB.determineexactlywhensimple

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A、检测和调节温度的设施B、配备必要的冷藏箱(柜)等设施，防止商品变质C、明亮，整洁，无环境污染源D、专门的生活区和办公区E、必要的场所及与经营品种和规模相适应的化验仪器、设备医药经营企业的营业场所应

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