先看一下下面的托福听力音频文字：
Student
But how is that proof that the Sahara used to be a lot wetter? I mean the people who painted those hippos, well, couldn’t they have seen them on their travels?
Professor
Okay, in principle they could, Karl. But the rock paintings aren’t the only evidence. Beneath the Sahara are huge aquifers, basically a sea of fresh water, that’s perhaps a million years old filtered through rock layers. And…er…and then there is fossilized pollen, from low shrubs and grasses that once grew in the Sahara. In fact these plants still grow, er…but hundreds of miles away, in more vegetated areas. Anyway, it’s this fossilized pollen along with the aquifers and the rock paintings, these three things are all evidence that the Sahara was once much greener than it is today, that there were hippos and probably elephants and giraffes and so on.
此段音频中学生提问，老师回答。
托福听力多选题解题思路分析
一般同学会在听完后直接摘录笔记词rock paiting，plants。有同学疑问为什么整段音频这么多就只摘录了这两个词记笔记。大多数同学的问题是听的过程中不能很好的其中所蕴含的逻辑关系，将文字笼统的认为就是两个核心一个rock painting 一个plants因为这两个词重复率比较高，完全执行了一次机械的听的过程。我们来细看文本分析会发现此段文字的逻辑结构非常清晰，如果我们能关注逻辑提示词的话。
首先学生提问，那我们要记住关注的逻辑就是要从回答的句来看看问题有没有得到解决。教授的回答句很笼统只是对学生的假设进行了赞同，赞同我们可以不用太关注，知道是赞同就可以了。当到文章的第二句话，but the rock paintings aren’t the only evidence我们就要给自己一个提示，这里要罗列两个以上的东西，而托福听力中多选题的题点对应处往往就是在这样的地方，所以我们围绕rock painting这个点去听，找到他的结束点。马上听到了第二个和rock painting不一样的核心词aquifers 如若不认识，先根据发音记录下形状，后面马上听到了两次同位语解释 sea和water，一样可以理解，围绕这三个词听完这个点，立马出现了and，and then这样的逻辑提示词，预示第三个罗列内容出现了，这个时候我们马上记录下pollen这个词，然后围绕pollen这个词听到这个核心的结束。然后老师用了anyway这个逻辑词，采用It’s this A along with B and C的罗列句型将之前提到的三个证据再次以罗列的形式重复一遍，再加上these three things are all evidence这个点收掉整个学生所提的问题这个段落。
那我们这么分析了逻辑后，再来看下当时所出的题目。
Not long ago, the Sahara had a different climate. What evidence does the professor mention to support this(3)
A. ancient pollen
B. Bones from large animals
C. Rock paintings
D. Agriculture in ancient Egypt
E. Underground water
所以从这段文字我们可以看出来，答案就是ACE。
