試卷:無年度 - 95年10月TOFEL閱讀(Page23-24)#20916
| 科目:TOEFL(Test of English as a Foreign Language)托福
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試卷名稱:無年度 - 95年10月TOFEL閱讀(Page23-24)#20916
科目:TOEFL(Test of English as a Foreign Language)托福
4. What do the experiments mentioned in lines 5-7 prove?
(A) Plant stems die when deprived of water
(B) Cells in plant stems do not pump water
(C) Plants cannot move water to high altitudes
(D) Plant cells regulate pressure within stems