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34.(   ) An animal’s color may protect itself against the danger.

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33.(   ) Red means stop and green means wait.

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32.(   ) Many animals can’t see colors but bees can.

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31.(   )Not everything we see has color.

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29. A. with      B. in       C. after      D. before

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28. A. French     B. Japanese     C. Americans    D. Russians

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27. A. popular    B. health       C. happy     D. terrible

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26. A. wishes     B. teaches      C. asks      D. wants

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