2. 职称英语
  3. People in a large area may possess the same DNA thread because ______ . [br] Whi

People in a large area may possess the same DNA thread because ______ . [br] Whi

游客2025-03-17  41
问题 People in a large area may possess the same DNA thread because ______ . [br] Which of the following CANNOT be inferred from the passage?
选项 A、We are a walking, living, breathing record of our ancestors.
B、Many American slaves did not know who their ancestors were.
C、An adopted child generally lacks enough information to prove his identity.
D、Molecular genealogy can be used to prove a relationship between individuals.
答案 C
解析 推理题。  A意为“我们的方方面面记录着我们的祖先”，可以由文章推断出此意，因为DNA具有遗传特性； B意为“许多美国黑奴不知道他们的祖先”，也可以由文章推断出此意，依据是第一段最后一句；C意为“收养的孩子一般缺少证明其身份的足够信息”，无法由文章推断出此意，因为他们与家族的关系是由基因特征而不是其他因素决定的；D意为“分子宗谱学能用来证明人与人之间的关系”，识别和证明人的身份关系是宗谱学的目的，也可以由文章推断出此意。
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