Why does the author mention blood types in paragraph 3?-考呗网题库移动版

不定项选择题Why does the author mention blood types in paragraph 3?

参考答案D

解析:

不定项选择题How did groups migrate into the Great Plains?

不定项选择题Why does the author mention the settlement at Monte Verde, Chile, in paragraph 5?

不定项选择题The word Eventually in the passage is closest in meaning to