2. 外语
  3. Nowadays many scientists depend on radiocarbon for dating age-old objects. The C-14 in an organism begins to decay when it dies

Nowadays many scientists depend on radiocarbon for dating age-old objects. The C-14 in an organism begins to decay when it dies

admin2010-01-16  92
问题 Nowadays many scientists depend on radiocarbon for dating age-old objects.
The C-14 in an organism begins to decay when it dies.
选项 A、Right
B、Wrong
C、Not mentioned
答案A
解析 本题的内容在最后一段第三句话中可以找到：Once an organism(有机体)dies it stops taking in carbon in any form，and me C-14 already present begins to decay．一旦有机体死亡，它就停止吸收任何形式的碳，它所含的C-14就开始衰竭。
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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
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