試卷：無年度 - 99年1月托福閱讀#20939
| 科目：TOEFL(Test of English as a Foreign Language)托福
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試卷名稱：無年度 - 99年1月托福閱讀#20939
科目：TOEFL(Test of English as a Foreign Language)托福
45. What is the main topic of the passage?
(A) The lives of Hazen and Brown.
(B) The development of a safe fungicide.
(C) The New York State Department of Health.
(D) The development of penicillin.
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