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  3. What aspect of ants does the passage mainly discuss? According to the passage, carbon dioxide serves which of the following fu

What aspect of ants does the passage mainly discuss? According to the passage, carbon dioxide serves which of the following fu

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问题  What aspect of ants does the passage mainly discuss?
  According to the passage, carbon dioxide serves which of the following functions for fire ants?
选项 A、It protects the queen.
B、It attracts other ant species.
C、It informs workers of possible danger.
D、It encourages the ants to gather together.
答案D
解析
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