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新托福作文高分范文:Cohesion-tension Theory

新托福考试写作考生想拿高分,“肚子里必须有点墨水”,背上一篇两篇优秀范文,以备不时只需。以下这篇范文的题目是:Cohesion-tension Theory。 Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more th...

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