Trắc nghiệm: It can be inferred from the passage that if an item contains more carbon-14 than nitrogen-14. then the item is _______. | Gửi trắc nghiệm |
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Trắc nghiệm: It can be inferred from the passage that if an item contains more carbon-14 than nitrogen-14. then the item is _______. | Gửi trắc nghiệm |