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  3. Nowadays many scientists depend on radiocarbon for dating age-old objects. An atom of ordinary carbon has six protons and eight

Nowadays many scientists depend on radiocarbon for dating age-old objects. An atom of ordinary carbon has six protons and eight

admin2012-09-10  48
问题 Nowadays many scientists depend on radiocarbon for dating age-old objects.
An atom of ordinary carbon has six protons and eight neutrons.
选项 A、Right
B、Wrong
C、Not mentioned
答案B
解析 这句话是错的，答案在第二段第二句：An atom of ordinary carbon，called carbon-12，has six protons(质子)and six neutrons(中子)in its nucleus．…普通的碳原子有6个中子。
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