剑桥雅思5里一道题的疑惑剑五 TEXT3 PASSAGE2 那篇disappearing delta 第21题 原文写的是"...indicated that the river sometimes carries .——almost half of what it carried before the dams were built" 题目是Stanley found that the levels of sediment in the river water in Cairo were relatively high 答案是T 它不是写的是 half of..么? 那不是少了么...这个题我一直没看懂 求教

问题描述:

剑桥雅思5里一道题的疑惑
剑五 TEXT3 PASSAGE2 那篇disappearing delta 第21题 原文写的是"...indicated that the river sometimes carries .——almost half of what it carried before the dams were built" 题目是Stanley found that the levels of sediment in the river water in Cairo were relatively high 答案是T 它不是写的是 half of..么? 那不是少了么...这个题我一直没看懂 求教

个人觉得的是时态额问题,原文虽然是indicated但从句里用的是现在时表现在的状况,题目中从句是过去时,所以应该说明的是建坝前的状况,就不矛盾了

对的,我之前也有疑问,应该是这样:
文中说:大坝建好后,河流带走沉淀物是之前的一半.
也就是说现在更多的沉淀物堆在开罗,没有被河流冲走,符合题目陈述