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

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

admin2012-09-10  51
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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