2. 外语
  3. Choose FOUR letters, A-G. Write the correct letters in boxes 6-9 on your answer sheet. Which FOUR uses are listed for bi

Choose FOUR letters, A-G. Write the correct letters in boxes 6-9 on your answer sheet. Which FOUR uses are listed for bi

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问题     Choose FOUR letters, A-G.
    Write the correct letters in boxes 6-9 on your answer sheet.
    Which FOUR uses are listed for bioluminescence in nature?
    A．ways of attracting food
    B．tracing the spread of diseases
    C．mating signals
    D．growing trees for street lighting
    E．drug trials
    F．defensive tactics
    G．a torch to identify food
选项
答案C
解析
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