1、从女生的语气中看出她想找一本书，但是没找到，所以请求library assistant 的帮助
2、Assistant: He’s a volcano expert so I thought he might be teaching your class.
这样答案就非常明显了。
3、据此推断，女生认为geology比assistant提到的三个科目都简单。
4、女生提到要查 Volcano Ruaephu，就是一个特定的火山，而非全部的新西兰火山
5、他说是2001年的资料，还有用么(Is that okay do you think?)assistant担心这个太老了。
Lecture-1
1、There are several techniques being employed tody that could prove useful ensuring the future of the reefs.
这就是lecture的topic sentence 根据他来确定选项。
2、Coral is very sensitive to water temperature..........One future possibility is that improved monitoring can help predict when and where bleaching occur.
Monitor只提到了water temperature monitor，所以可以确定 第二句的monitor指的什么。
3、教授的话中，出现了 could only be used as the last result, costly, even if it is successful, it still fails to address the ongoing problem.
所以选项应该是负面的，最后一句与答案对应。
4、这个东西 resistant to bleaching，与D项对应。 然后是 key points of overall resilience,那前面就是是解释这些refugia是关键的原因
5、定位到 mangrove， 这属于一个例子，首先确定他是对 reef有益处的，mangrove roots have the ability to absorb and trap sediments of polluted water that flow through them before they enter the ocean. 这就是净化水源的作用
6、在教授的例子中，这些都是 feed on organism that eat corals。 所以答案很明显They prevent a reef from growing by preying on young corals.
Lecture-2
1、Tone quality differs from instrument to instrument. And the question is why. Why does an instrument sound more beautiful than another even if they look identical? Lecture的剩余部分全部是来解答这个问题，所以确定答案为C
2、Today’s violin makers can pretty much replicate all the physical attributes of a Cremonese violin. Physical attributes 指的就是 craftsmanship。 而且从后文中也可以看出主要是木材的关系，与技艺无关。
3、就是生长周期的不同导致了 density differential， 所以教授讨论生长周期就是在解释为什么有 density differential
4、对于古琴来说，办法是：turns out the Cremonese violins were made from trees that grew during a little ice age when temperature across Europe is significantly lower than normal. 也就是说 Cremonese 的木头是在小冰河期时候长出来的，全年气候都比较寒冷
5、He basically exposed the wood to a species of fungus, a mushroom........but this particular fungus nibbles away only at certain layers in the wood........as a result, the fungi treated wood approaches the woods of Cremonese wood.. 确定答案选择A
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