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．

转载请注明原文地址:https://kaotiyun.com/show/hMQd777K

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

InternetShoppingInternetshoppingisanewwayofshopping.Nowadays,youcanshopforjustaboutanythingfromyourarmch

Awin-winnegotiationisasuccessfulcompromiseinwhichbothsidesimprovetheirsituationthroughmutualcooperation.Thekey

Themajorityofpeople,aboutnineoutoften,areright-handed.Notuntilrecently,peoplewhowereleft-handedwereconsidered

ActiveinOldAgeKeepsPeopleMobilePeopleover70whoaren’tactivearemorelikelytodevelopproblemswalkingorclimbin

NowaspecialTVnetworkgiveslivecoverageofmostmatchesofOlympicGames.

Lookingtohelptheenvironment?Considerthefollowingsimpleideas.Turnoffelectricaldeviceswhenthey’renotbeinguse

HealthEducation1Healtheducationisthepartofhealthcarethatisconcernedwithpromotinghealthybehavior.Aperson’sbeh

Thetravelerswerereadytoenjoythespectaculartidalwaveswhensuddenlyathickfogcameupandobscuredthewholescene.

Thelittlegirlgraspedhermother’shandasshecrossedthestreet.

Theeternalmotionofthestarsfascinatedhim.

在PowerPoint2010中，为了在切换幻灯片时添加声音，可以使用________选项卡的“计”组的“声音”命令。

什么叫混凝?

无论多么困难，我也不会失去信心。

意思表示不真实的民事行为，包括( )。

为正确选择采样点、采样对象、采样方法和采样时机等，必须在采样前对工作场所进行现场调查，必要时可进行预采样，主要的调查内容中不包括的是()。

下列不属于食物中毒症状的是()。

在某并行数据库中，有关系R(A,B)和S(B,C)。其中R包含1000000行数据，S包含100行数据。现有查询SELECT*FROMR，SWHERER．A>S．B。下列数据划分方式中，对该查询速度最快的是()。

下列IP地址中，()是可以分配给特定因特网用户的。

Readthearticlebelowaboutthelifecycleofacondensedemployee.Choosethebestsentencefromthelist(A-G)tofilleach

A、Calltheoffice.B、Signthenameonthenoticeboardinadvance.C、Paythemoney.D、Thereisnoneedtoreserveaplace.B信息明示

意思表示不真实的民事行为，包括(　　)。