試題詳解

60. Radiolabelled isotope dating is an important method to determine the age of a fossil. A14C content analysis of an animal fossil showed that its content is 0.01562 fold as much 14C as the atmosphere. The half-life of 14C is 5730 years. The age of the fossil is close to which of the following?
(A) 1000 years
(B) 5730 years
(C) 35000 years
(D) 70000 years
(E) 100000 years