回原文定位的话,在最后一段第一句, the ocean's dynamic change in this way, 而这个in this way,指的就是第一段的 the proportions of these red-stained grains(题目中换成了sediment) fluctuated back and forth form lows of 5 percent to highs of about 17 percents
这个题其实不用定位,robin以前教过我们,排除法做。AB 讲的composition怎么怎么样,文章讲的是proportion没讲composition,D 原文没有比较,E Gulf stream 是讲冷热水和水的moving,跟little ice age无关
这道长阅读我一直认为这是PP II里面最经典的一道全篇infer题
如果你读不懂文章这题肯定选不出来
你先看看这四段话每一段的内容
P1, sediment research indicates that icebergs carries it, and it may fluctuate accordingly
P2, ocean water pattern may be the cause of the iceberg's travelling and fluctuation
P3, ocean water temperature is both the cause and effect
P4, Bond's hypothesis' further implication
拿到最后一道题
Little ice age对应的气候寒冷时期,因此这时候iceberg会travel further south, 最终在warm water的影响下融化沉积,因此这里的sediment的百分比应该是更高一点。C选项正确答案。我来带你看一下错误的选项。
A.composition, god no. 全文一直讲百分比,proportion,没讲构成
B. 见A
C. Bingo
D. 没有过比较,即便有的话, 也应该是south比north高, out of scope & contradiction
E. god no. Gulf stream water是使得iceberg融化的因素.