試卷：無年度 - 2002年8月托福閱讀#20937
| 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8月托福閱讀#20937
科目：TOEFL(Test of English as a Foreign Language)托福
23. Which of the following is NOT mentioned in paragraph 1 as resulting from rapid ecological change?
(A)Temperature changes
(B)Availability of food resources
(C)Introduction of new species
(D)Competition among species
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