Section 1
对话：学生嫌弃抽到的房间不好，小，然后室友抽到了比较好的房间，问室友要搬出去了是否他可以用室友抽到的，规定不可以，建议他找其他抽到比较好的double room的人同住。
解析：宿舍场景在近几次考试中考查较为频繁，考生要对该场景的场景内容和相关表达引起足够重视。
词汇：draw lots 抽签
讲座一: 一种教育方法，有些学生偏向视觉上学习，一些偏向听觉，另一种忘了，于是教师可以根据学生的偏好选择教学方法，但是又有实验表示参加偏好的教学方法的学生，和参加随机一个教学方法的学生比，某个统一考试的成绩并不都好，于是…另外发现如果教师在课上利用工具让学生做实验，学习效果会变好。
解析:
该篇文章属于社会科学类文章。社会科学类文章在探知某个主题的过程中经常会提到实验，而实验的目的往往是ETS考查的重点。
词汇：
audition [ɔ'dɪʃən] n.听觉,听力
vision ['vɪʒən] n.视力，视觉
讲座二:
有个theater,反映现实生活的speed, 其它都忘了
Section 2
对话：学生来找老师吐槽说写不出来老师出的作业(自传or回忆录)，问能不能换个topic，老师say no. 说学生不一定要写所有出生来发生的事情而是一些特有的具体的事件，这是举了个例子，有个女作家自己的自传里都怎么写的，然后女学生突然开窍，打算写小时候自己搬来搬去帮助自己不怕陌生环境的事情。
解析：
对话第一题问法：why does the student go to see the professor? 该类问法解题策略是抓对话开头的学生表达自己遇到难题的关键句。对话当中教授在帮助学生分析难题的过程中，举的例子，也往往是题目考查的侧重点，在讲座中，针对例子考点，出题形式往往是why does the professor mention…? 对话中也同样。
词汇：
autobiography [,ɔtəbaɪ'ɑɡrəfi] n.自传
memoir ['mɛmwɑr]n. 回忆录
讲座：研究海底的声音。一种可能是海底火山发出，另一种可能是ice的一些板块运动产生的，对研究climate change有帮助，还有一种是大型生物产生。
解析：
本篇文章是一篇地质学讲座，板块移动和火山爆发等相关理论一直是地质学考查热点。
背景知识：
背景：
国家地理之大陆漂移说Medicine wheels与大陆漂移说
1.Medicine wheels, or sacred hoops, were constructed by laying stones in a particular pattern on the ground. Most medicine wheels follow the basic pattern of having a center of stone(s), and surrounding that is an outer ring of stones. Originally, medicine wheels are stone structures constructed by certain peoples of Africa for various astronomical, ritual, healing, and teaching purposes.
2.One of the older wheels has been dated to over 4,500 years old. Like Stonehenge, it had been built up by successive generations who would add new features to the circle. Due to the long existence of such a basic structure, archaeologists suspect that the function and meaning of the medicine wheel changed over time, and it is doubtful that we will ever know what the original purpose was.
3.Astronomer John Eddy put forth the theory that some of the wheels had astronomical significance, where spokes on a wheel could be pointing to certain stars, as well as sunrise or sunset, at a certain time of the year, suggesting that the wheels were a way to mark certain days of the year.. Other scientists have shown that some of the wheels mark the longest day of the year.
词汇：
volcano [vɑl'keno] n. 火山
plate [plet]n. 板块
seafloor ['si,flor]n. 海底