2. 外语
  3. "Social mammals" in the second paragraph means "______". Researchers began their research work with the ancient ears most proba

"Social mammals" in the second paragraph means "______". Researchers began their research work with the ancient ears most proba

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问题 "Social mammals" in the second paragraph means "______".
Researchers began their research work with the ancient ears most probably because ______.
选项 A、hearing mid talking developed in a common ancestor shared by both Neandertals and modern people
B、hearing might have evolved long before talking
C、computers can make three-dimensional models of what the ancient ears looked like
D、humanlike ears suggest humanlike speech
答案B
解析 浏览全文，就可以知道选项[B](hearing might have evolved long before talking)与倒数第二段中"And anyway，hearing could have evolved long before talking．"为同义表达，因此选项[B]为正确选项。
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