試卷：無年度 - 2002年5月托福閱讀#20903
| 科目：TOEFL(Test of English as a Foreign Language)托福
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試卷名稱：無年度 - 2002年5月托福閱讀#20903
科目：TOEFL(Test of English as a Foreign Language)托福
32. According to the passage, carbon dioxide serves which of the following functions for fire ants?
(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.
阿摩線上測驗
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