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Genetic data suggest most people alive today who are not African or of recent African descent can trace their ancestry to one or a few "out of Africa" migrations that began about 60,000 years ago into Asia,and thence spread to Australia, Europe and the Americas.More detailed analysis, though, shows that on the way through these places some of those ancestral humans interbred with other human species, now extinct, including Neanderthals.
点睛
【词汇突破】
1.ancestry祖先，血统
2.migration迁移，
3.interbred 使混种，
【主干识别】Genetic data suggest
【其他成分】
most people alive today who are not African or of recent African descent can trace their ancestry to one or a few "out of Africa" migrations that began about 60,000 years ago into Asia, and thence spread to Australia, Europe and the Americas.宾语从句；who are not African or of recent African descent定语从句；that began about 60,000 years ago into Asia, and thence spread to Australia, Europe and the Americas.定语从句；
【主干识别】More detailed analysis, though, shows
【其他成分】that on the way through these places some of those ancestral humans interbred with other human species, now extinct, including Neanderthals.宾语从句

译文
基因数据表明，如今大部分的非非洲或非近非洲后裔的人，他们的祖先可以追溯到约6万年前开始的一次或几次“走出非洲”到亚洲的迁徙，并从那里散布至澳大利亚、欧洲和美洲。
虽然更加详细的分析表明在穿越这些地方的途中，这些祖先中的一些人与其他现在已经灭绝的人类交配，包括尼安德特人。
拓展
写作高级词汇
1.合作cooperation
2.社会公德publicmorality
3.礼貌politeness
4.提高个人修养shapingthemorality
5.财富wealth