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  3. What does the passage mainly discuss? According to the passage, the meaning of a message communicated through a pheromone may

What does the passage mainly discuss? According to the passage, the meaning of a message communicated through a pheromone may

admin2004-12-28  106
问题  What does the passage mainly discuss?
  According to the passage, the meaning of a message communicated through a pheromone may vary when the
选项 A、chemical structure of the pheromone is changed
B、pheromone is excreted while other pheromones are also being excreted
C、exocrine glands do not produce the pheromone
D、pheromone is released near certain specific organisms
答案A
解析
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