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标题: GMAT-2-4请教求解思路 [打印本页]

作者: sv2000    时间: 2005-11-11 15:35
标题: GMAT-2-4请教求解思路












On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.













On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow








On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth








On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles








Among the surest indications on Earth of sunspot cycles, believed to be the tree growth rate








Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow

作者: yangsh    时间: 2005-11-11 17:54
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