問題詳情
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
(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
參考答案
答案：B
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
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