Section 1(注：红色选项为答案)(注：红色选项为答案)
1.Why does the man go to see his professor?
A.?To borrow some charts and graphs from her
B.?To ask her to explain some statistical procedures
C.?To talk about report he is writing
D.?To discuss a grade he got on a paper
解析：解析：问主旨。对话一开始相互之间的问候之后，教授问学生此行的目的，学生的回答也很直接，于是马上引出了主题。
(原文中)：
Student :Well, I have some quick questions about how to write up the research project I did this semester—about climate variations.
问主旨。对话一开始相互之间的问候之后，教授问学生此行的目的，学生的回答也很直接，于是马上引出了主题。
2.What information will the man include in his report?
Click in the correct box for each phrase
Include in reportNot include in report
Climate charts
Interviews with meteorologists
Journals notes
Statistical tests
解析：
解析：问细节。学生提到他怀疑东西是不是足够，如果确实不足够的话，应该补充一些什么东西进去。由此引出什么内容应该放入报告之中。随后对话的主要内容是分别讨论某些东西是否应该放进去。我们听到了journal note应该保留，meteorological records, climate charts, certain statistical tests, results等等是需要有的内容。而Interviews with meteorologists则没有提到。
(原文中)
原文：
Student :Right. I understand. I was wondering if I should also include the notes from the research journal you suggested I keep.
Professor :Yes, definitely. You should use them to indicate what your evolution in thought was through time. So, just set up, you know, what was the purpose of what you were doing—to try to understand the climate variability of this area—and what you did, and what your approach was.
Student :OK. So, for example, I studied meteorological records; I looked at climate charts; I used different methods for analyzing the data, like certain statistical tests; and then I discuss the results. Is that what you mean?
问细节。学生提到他怀疑东西是不是足够，如果确实不足够的话，应该补充一些什么东西进去。由此引出什么内容应该放入报告之中。随后对话的主要内容是分别讨论某些东西是否应该放进去。我们听到了journal note应该保留，meteorological records, climate charts, certain statistical tests, results等等都是需要有的内容。而Interviews with meteorologists则没有提到。
3.Why does the professor tell the man about the appointment at the doctor's office?
A. To demonstrate a way of remembering things
B.?To explain why she needs to leave soon
C.?To illustrate a point that appears in his report
D.?To emphasize the importance of good health
解析：
解析：问细节。此题问特定内容的目的是什么，需要结合上下文并对内容有了解。教授提到，自己跟女儿外孙一起看医生，知道自己不能记住所有的东西，因此需要写一个list，建议学生也用写下来的方法以便记忆。因此选A.
(原文中)
原文：
For example, I went to the doctor with my daughter and her baby son last week and we knew we wouldn’t remember everything we wanted to ask the doctor, so we actually made a list of five things we wanted answers to.
问细节。此题问特定内容的目的是什么，需要结合上下文并对内容有了解。教授提到，自己跟女儿、外孙一起看医生，知道自己不能记住所有的东西，因此需要写一个list，建议学生也用写下来的方法以便记忆。因此选A.
4.What does the professor offer to do for the man?
A.?Help him collect more data in other areas of the state
B.?Submit his research findings for publication
C.?Give him the doctor's telephone number
D.?Review the first version of his report
解析：解析：问细节。教授提到可以帮学生看一遍draft，提出修改意见。在音频中可以听到关键词draft，与选项中first version是同意替换。
(原文中)
原文：
Professor: Sounds good. I’d be happy to look over a draft version before you hand in the final copy, if you wish.
问细节。教授提到可以帮学生看一遍draft，提出修改意见。在音频中可以听到关键词draft，与选项中first version是同意替换。
5.Why does the professor say this?
A.?To question the length of the paper
B.?To offer encouragement
C.?To dispute the data sources
D.?To explain a theory
解析：解析：重听题。这部分内容是教授告诉学生她认为学生是最熟悉自己论文的人，因此需要有自信。在四个选项中，唯一与鼓励相关的就是B。ACD均与本段无关，排除法选择B。
(原文中)
原文：
Professor：
I hear the same thing from every student. You know, you have to remember now that you’re the expert on what you’ve done. So, think about what you’d need to include if you were going to explain your research project to someone with general or casual knowledge about the subject, like… like your parents. That’s usually my rule of thumb: would my parents understand this?
重听题。这部分内容是教授告诉学生她认为学生是最熟悉自己论文的人，因此需要有自信。在四个选项中，唯一与鼓励相关的就是B。ACD均与本段无关，排除法选择B。
6.What is the professor mainly discussing?
A.?The development of motor skills in children
B.?How psychologists measure muscle activity in the throat
C.?A theory about the relationship between muscle activity and thinking
D.?A study on deaf people's problem-solving techniques
解析：解析：问主旨。我们从第一段可以听出关键词mental processes和muscular habits，并没有提到任何跟孩子、喉咙、聋哑人等相关的内容。mental process与thinking是同义替换，因此确定C。
(原文中)
原文：They’re not interested in mental processes. While a person could describe his thoughts, no one else can see or hear them to verify the accuracy of his report. But one thing you can observe is muscular habits. What Watson did was to observe muscular habits because he viewed them as a manifestation of thinking.
问主旨。我们从第一段可以听出关键词mental processes和muscular habits，并没有提到任何跟孩子、喉咙、聋哑人等相关的内容。mental process与thinking是同义替换，因此确定C。
7.Why does the professor say this?
A.?To give an example of a laryngeal habit
B.?To explain the meaning of a term
C.?To explain why he is discussing laryngeal habits
D.?To remind students of a point he had discussed previously
解析：解析：问目的。从上文结尾听到了一个陌生单词laryngeal habits，可知下一段主要是关于这个未知名词的。由于这个名词比较特殊，不常见，因此演讲者给出了解释。我们听到了一个关键词in other words，作者用更通俗的语言来解释什么叫laryngeal habits。并没有举出例子或者说明自己为什么要讨论这个话题，前文中也从来没有提到。ACD选项均不符题意。
(原文中)
原文：Watson thought laryngeal habits …you know, from larynx, in other words, related to the voice box…he thought those habits were an expression of thinking.
问目的。从上文结尾听到了一个陌生单词laryngeal habits，可知下一段主要是关于这个未知名词的。由于这个名词比较特殊，不常见，因此演讲者给出了解释。我们听到了一个关键词in other words，作者用更通俗的语言来解释什么叫laryngeal habits。并没有举出例子或者说明自己为什么要讨论这个话题，前文中也从来没有提到。ACD选项均不符题意。
8.Why does the professor say about people who use sign language?
A.?It is not possible to study their thinking habits
B.?They exhibit laryngeal habits
C.?The muscles in their hands move when they solve problems
D.?They do not exhibit ideomotor action
解析：
(原文中)
原文：
Uh, he did indeed, um, and to jump ahead, what one finds in deaf individuals who use sign language when they’re given problems of various kinds, they have muscular changes in their hands when they are trying to solve a problem…
问目的。本题问教授为什么会提到聋哑人使用手语的例子，由原文可知教授首先介绍了心理活动与咽喉肌肉运动的关系，随后学生提到聋哑人的例子，想要知道使用手语的聋哑人是不是符合前文中提到的理论，然后教授给出了解释，说明聋哑人的心理活动与他们手部肌肉活动的关系，解释了学生的疑问。
9.What point does the professor make when he refers to the university library?
A.?A study on problem solving took place there
B.?Students should go there to read more about behaviorism
C.?Students' eyes will turn toward it if they think about it
D.?He learned about William James' concept of thinking there
解析：
(原文中)
Well, if you close your eyes and think of the library, and if you’re sitting directly facing me, then according to this notion, your eyeballs will move slightly to the left, to your left, ‘cause the library’s in that general direction
问目的。本题问教授举图书馆的例子目的何在。由原文可知，教授在解释ideomotor action这个理论的含义，为了帮助学生理解，举了一个图书馆的例子，向学生说明，当学生想象图书馆的时候，肌肉会有与之相关的运动。
10.The professor describes a magic trick to the class, what does the magic trick demonstrate?
A. An action people make that they are not aware of
B.?That behaviorists are not really scientists
C.?How psychologists study children
D.?A method for remembering locations
解析：
(原文中)
It’s called ideomotor action. Ideomotor action is an activity that occurs without our noticing it, without our being aware of it.
问目的。教授在课堂中提到的magic trick原理在于前文讲过的ideomotor action，由这一原理可知人们的心理活动可以反映在肌肉活动上，这种肌肉活动可能人们自己都觉察不到。因此A选项正确。
11.What is the professor's opinion of the motor theory of thinking?
A.?Most of the evidence he has collected contradicts it
B.?It explains adult behavior better than it explains child behavior
C.?It is the most valid theory of thinking at the present time
D.?It cannot be completely proved or disproved
解析：
(原文中)
Is there anything else that might account for this change in muscular activity, other than saying that it is thinking? And the answer is clearly yes. Is there any way to answer the question definitively? I think the answer is no.
问细节。此题问演讲者对于前文提到的motor theory的态度。由原文可知，演讲者并没有收集足够的反驳此理论的证据，也并没有对于提到成人和孩子的区别，也没有提及此理论是否是目前最为可靠的理论。而在介绍完了此理论之后，作者提到这个理论可以解释一些问题，但却无法解释所有的问题，因此D选项最符合题意。
12.What aspect of Manila hemp fibers does the professor mainly discuss in the lecture?
A.?Similarities between cotton fibers and manila hemp fibers
B.?Various types of manila hemp fibers
C.?The economic importance of Manila hemp fibers
D.?A use of Manila hemp fibers
解析：
(原文中)
Today we’ll continue talking about useful fibers, and we’ll begin with a fiber that’s commonly known as “Manila hemp.”
问主旨。文章主要讨论的是Manila hemp这种fiber的用途。前三项明显不符合题意，选D。
13.Why does the professor mention going away for the weekend?
A. To tell the class a joke
B.?To apologize for not completing some work
C.?To introduce the topic of the lecture
D.?To encourage students to ask about her trip
解析：
(原文中)
Um, I was hoping to have your exams back today, but, uh, the situation was that I went away for the weekend, and I was supposed to get in yesterday at five, and I expected to fully complete all the exams by midnight or so, which is the time that I usually go to bed, but my flight was delayed, and I ended up not getting in until one o’clock in the morning. Anyway, I’ll do my best to have them finished by the next time we meet.
问细节。教授提到了自己原本打算将学生们的测验反馈给学生，但是教授周末离开了，本来应该早点回来午夜前批改完毕，但是由于飞机延误了，所以没能完成计划。选B。
14.What does the professor imply about the name Manila hemp?
A.?It is a commercial brand name
B.?Part of the name is inappropriate
C.?The name has recently changed
D.?The name was first used in the 1940's
解析：
(原文中)
Now, for some strange reason, many people believe that Manila hemp is a hemp plant. But Manila hemp is not really hemp. It’s actually a member of the banana family— it even bears little banana-shaped fruits.问细节。教授提到Manila hemp的名字说明了两件事，其中第一个，Manila hemp其实不属于hemp，而是banana的一种，因此hemp的名字是不太合适的。B选项正确。A、C、D选项均没有提及。
15.Why does the professor mention the Golden Gate Bridge?
A.?To demonstrate a disadvantage of steel cables
B.?To give an example of the creative use of color
C.?To show that steel cables are able to resist salt water
D.?To give an example of a use of Manila hemp
解析：
(原文中)
Well, the main reason was that steel cables degrade very, very quickly in contact with salt water. If you’ve ever been to San Francisco, you know that the Golden Gate Bridge is red. And it’s red because of the zinc paint that goes on those stainless steel cables.
问细节。教授在比较steel cable和Manila hemp哪一种在海水里更好。举出Golden Gate Bridge，是为了说明steel cable在海水里会发生严重的腐蚀现象，因此是steel cable的缺点之一。
16.According to the professor, what was the main reason that many ships used Manila hemp ropes instead of steel cables?
A.?Manila hemp was cheaper
B.?Manila hemp was easier to produce
C.?Manila hemp is more resistant to salt water
D.?Manila hemp is lighter in weight
解析：
(原文中)
On the other hand, plant products like Manila hemp, you can drag through the ocean for weeks on end.
承接上题，因为steel cable不耐海水腐蚀，而Manila hemp不存在这个问题，所以远洋航船更多会用Manila hemp而不是steel cable。
17.According to the lecture, what are two ways to increase the strength or rope made from Manila hemp fibers? Click on 2 answers.
A.?Coat the fibers with zinc-based paint
B.?Combine the fibers into bundles
C.?Soak bundles of fibers in salt water
D.?Twist bundles of fibe
解析：
(原文中)
Well, what you do is you extract these long fibers from the Manila hemp plant, and then you take several of these fibers, and you group them into a bundle, because by grouping the fibers you greatly increase their breaking strength—that bundle of fibers is much stronger than any of the individual fibers that compose it. And then you take that bundle of fibers and you twist it a little bit, because by twisting it, you increase its breaking strength even more. And then you take several of these little bundles, and you group and twist them into bigger bundles, which you then group and twist into even bigger bundles, and so on, until eventually, you end up with a very, very strong rope.
问细节。教授在文中提到如何使Manila hemp更加牢固的方法，从文中我们听到了关键句：So how do you take plant fibers that individually you could break with your hands and turn them into a rope that’s strong enough to moor a ship that weighs thousands of tons?此句之后就是教授提到的方法，一种是多股揉成一股，另一种是扭曲之后会更坚固。
Section 2
1.What are the students mainly discussing?
Click on 2 answers.
A.?Their courses for next semester
B.?Their plans for the weekend
C.?A poetry club
D.?A class assignment
解析：
(原文中)
Girl
Did you register already for your classes next semester?
Boy
Yes, I did.
Girl
What are you taking?
.
.
.
Boy
Cool, you should. Um, did you hear about that new poetry club, The Poetry Kitchen?
问主旨。这道题考察学生对会话主要内容的概括能力。由原文可知两个学生的对话主要围绕在各自下学期的安排及诗歌俱乐部的讨论上，因此A，C两项正确。
2.What does the man plan to do at the end of the month?
A.?Register for classes
B.?Finish writing his master's thesis
C.?Leave his job at the coffee shop
D.?Take a short vacation
(原文中)
Boy
Yeah, it will be really busy and I’m also taking a theory class. But I have to quit my job a couple of weeks ‘cause it will be just too much.
Girl
Where do you work at?
Boy
Buster’s coffee shop, but just till the end of the month. What are you doing next semester?
解析：问细节。有原文可知，男生准备辞掉几个星期的工作，因为学习太忙了。文中可以听到关键词quit my job，辞职辞去。
3.Why does the man talk to the woman about the "Poetry Kitchen"?
A.?To find out how often the club meets
B.?To inform her that the date of the next meeting has changed
C.?To complain that not enough people are reading their poems
D.?To encourage her to attend
解析：
(原文中)
Girl
I do homework Sunday nights.
Boy
Well, it’s only from 7 to 9.
Girl
Is it every Sunday?
Boy
Last Sunday of every month. I don’t know about this month, ‘cause it’s probably a little too close to Thanksgiving, so they might move it up. I don’t know what they are gonna do, but it’s a good time, it’s fun, some really impressive readings.
Girl
Who? From our class?
Boy
Some people from our class are reading. A lot of them go, sometimes even the professor.
Girl
Really? I don’t know if I would want reading in front of her.
Boy
You wouldn’t have to read, you can just watch. I just watched the first time, but it’s a good environment to read them, I think anyway.
问目的。由原文可知，男生跟女生介绍Poetry Kitchen的情况，且他对于俱乐部的介绍都是正面积极评价，因此可知男生希望女生能够继续写诗，也希望她能够参加俱乐部的聚会。
4.What is the woman's attitude toward participating in the poetry club?
A.?She is looking forward to hearing her professor's poetry
B.?She is interested in attending but she has no time
C.?She thinks the poetry that is read there is not very good
D.?She used to participate but did not enjoy it
解析：
(原文中)
Boy
Cool, you should. Um, did you hear about that new poetry club, The Poetry Kitchen?
Girl
Yeah, no time.
.
.
.
Boy
You wouldn’t have to read, you can just watch. I just watched the first time, but it’s a good environment to read them, I think anyway.
Girl
I probably have to write something new, so maybe during the summer, I just can’t now.
问态度。从原文可知，女生经常自己写诗，对于诗社还是比较感兴趣的。但是她下学期会比较忙，因此不会有时间参加诗社。
5.What will the students do in the summer?
A.?They will both take courses
B.?They will both have full-time jobs
C.?They will travel to England together
D.?They will teach a class together
解析：
(原文中)
Boy
Yeah, it wouldn’t be the same just reading old stuff. Are you going to do summer school?
Girl
Definitely. Otherwise, I will be short 6 credits. I have no choice.
Boy
Yeah, me too. This is the second summer I’ll have to take classes. I gotta go now, my Shakespeare class starts at twenty minutes.
问细节。原文中，男生问女生是否要参加summer school，女生回答是的，男生说自己也需要，由此可知男生两人在假期都需要参加课程以保证学分。
6.What is the main purpose of the lecture?
A.?To illustrate the importance of extrinsic values
B.?To explain Aristotle's views about the importance of teaching
C.?To explain why people change what they value
D.?To discuss Aristotle's views about human happiness
解析：
(原文中)
Professor
OK. Another ancient Greek philosopher we need to discuss is Aristotle—Aristotle’s ethical theory. What Aristotle’s ethical theory is all about is this: he’s trying to show you how to be happy—what true happiness is.
问主旨。本段Lecture场景是在哲学课上，教授正在讲述亚里士多德的哲学观。在Lecture的开头教授就对主要内容进行了说明。
7.The professor gives examples of things that have value for her. Indicate for each example what type of value it has for her.
Click in the correct box. This question is worth 2 points.
Only extrinsic valueOnly intrinsic valueBoth extrinsic and intrinsic value
Teaching
Exercise
Health
Playing musical instrument
解析：
(原文中)
About Exercise: So I desire to engage in exercise and I value exercise extrinsically … not for its own sake, but as a means to something beyond it.
About Teaching: but I could make more money doing other things. I’d do it even if they didn’t pay me. I just enjoy teaching. In that sense it’s an end to itself.
Health: It’s pleasant to be healthy, unpleasant not to be. So to some degree I value health both for itself and as a means to something else: productivity. It’s got extrinsic and intrinsic value for me.
Playing instrument: I’m a musician, not a professional musician; I just play a musical instrument for fun.
问细节。本题涉及到教授提到的四种行为，分别在教授讲述extrinsic value和intrinsic value时出现，并分别进行了分析和分类。锻炼可以带来健康的身体，因此具有外在价值。教书和弹奏乐器都让教授感到有乐趣，即使没有人付他钱他也会主动自发的去做，因此具有内在价值。而健康，既能给教授带来丰富的生活，本身又是一件会让他高兴的事情，因此既有外在价值又有内在价值。
8.Why is happiness central to Aristotle's theory?
A.?Because it is so difficult for people to attain
B.?Because it is valued for its own sake by all people
C.?Because it is a means to a productive life
D.?Because most people agree about what happiness is
解析：
(原文中)
Well, Aristotle asks: is there something that all human beings value… and value only intrinsically, for its own sake and only for its own sake? Aristotle thought the answer was yes. What is it? Happiness.
问原因。教授在说明了今天讲授的主要内容是亚里士多德的理论后，随即介绍了幸福在亚里士多德理论中的重要性，并为它的重要性给出了解释。
9.According to the professor, why does Aristotle think that fame cannot provide true happiness?
A.?Fame cannot be obtained without help from other people
B.?Fame cannot be obtained by all people
C.?Fame does not last forever
D.?People cannot share their fame with other people
解析：
(原文中)
Second, true happiness should be something that I can obtain on my own. I shouldn’t have to rely on other people for it.…because fame depends altogether too much on other people.
问细节。本题就教授Lecture的细节内容进行了考察，询问为什么亚里士多德认为名誉并不能带来真正的幸福，教授也在文中给出了解释：由于亚里士多德认为，真正的幸福应该是人可以独立获得的，不需要依靠他人才能获取，而名誉很大程度需要依靠他人才能获得，因此名誉并不能带来真正的幸福。
10.What does the professor mean when she says this( )?
A.?Teaching is not a highly valued profession in society
B.?She may change professions in order to earn more money
C.?The reason she is a teacher has little to do with her salary
D.?More people would become teachers if the salary were higher
解析：
(原文中)
About Teaching: but I could make more money doing other things. I’d do it even if they didn’t pay me. I just enjoy teaching. In that sense it’s an end to itself.
重听题。题目问：教授说自己做别的事情比教书赚的钱更多是想表达什么含义?有原文可知，教授正在解释教书这件事情的价值对于自己来说是内在价值还是外在价值。教授认为教书虽然可以赚钱，但是做别的事情可以挣更多的钱，因此对于她来说，教书不是为了赚钱，而是因为教书让她感到快乐。因此C选项正确，教授教书不是为了赚钱。
11.What is Bode's law?
A.?A law of gravitation
B.?An estimate of the distance between Mars and Jupiter
C.?A prediction of how many asteroids there are
D.?A pattern in the spacing of the planets
解析：
(原文中)
Professor
Right. In astronomical units—not perfect, but tantalizingly close. The value for Mars is off by… 6 or 7 percent or so. It’s… but it’s within 10 percent of the average distance to Mars from the Sun. But I kind of have to skip the one after Mars for now. Then Jupiter’s right there at 5-point something, and then Saturn is about 10 astronomical units from the Sun. Um, well, this pattern is known as Bode’s Law.
本质是在问主旨。整段文字其实都是关于Bode's law的，因此学生需要对整段文字的意义正确理解和把握，才能回答此问题。由原文可知，教授讲到了一个有趣的数学排列，这个排列与天体位置不谋而合，这个规律就叫做Bode's law，故选D。
12.Why does the professor explain Bode's Law to the class?
A.?To describe the size of the asteroids
B.?To explain how the asteroids belt was discovered
C.?To explain how gravitational forces influence the planets
D.?To describe the impact of telescopes on astronomy
解析：
(原文中)
And Ceres was in the right place—the missing spot. Uh, but it was way too faint to be a planet. It looked like a little star. Uh, and because of its starlike appearance, um, it was called an “asteroid.” OK? “Aster” is Greek for “star,” as in “astronomy.” Um, and so, Ceres was the first and is the largest of what became many objects discovered at that same distance. Not just one thing, but all the objects found at that distance from the asteroid belt. So the asteroid belt is the most famous success of this Bode’s Law. That’s how the asteroid belt was discovered.
问目的。题目问为什么教授要向全班解释Bode's Law。文章的前半部分都是在解释Bode's Law，后面引出了两个天体的发现经过，因此B选项是正确的。
13.How does the professor introduce Bode's Law?
A.?By demonstrating how it is derived mathematically
B.?By describing the discovery of Uranus
C.?By drawing attention to the inaccuracy of a certain pattern
D.?By telling the names of several of the asteroids
解析：
(原文中)
Professor
OK. Let’s get going. Today I’m going to talk about how the asteroid belt was discovered. And . . . I’m going to start by writing some numbers on the board. Here they are: We’ll start with zero, then 3, . . . 6, . . . 12. Uh, tell me what I’m doing.
Female student
Multiplying by 2?
Professor
Right. I’m doubling the numbers, so 2 times 12 is 24, and the next one I’m going to write after 24 would be . . .
Female student
48.
Professor
48. Then 96. We’ll stop there for now. Uh, now I’ll write another row of numbers under that. Tell me what I’m doing. 4, 7, 10 . . . How am I getting this second row?
Male Student
Adding 4 to the numbers in the first row.
Professor
I’m adding 4 to each number in the first row to give you a second row. So the last two will be 52, 100, and now tell me what I’m doing.
Female Student
Putting in a decimal?
Professor
Yes, I divided all those numbers by 10 by putting in a decimal point. Now I’m going to write the names of the planets under the numbers. Mercury . . . Venus. . . Earth. . . Mars. So, what do the numbers mean? Do you remember from the reading?
问方式。本题很明显，文章一开始有大段大段的文字，是教授先是给学生介绍了一个数学模型，由此引入天体规律的发现史。
14.According to the professor, what two factors contributed to the discovery of the asteroid Ceres?
Click on 2 answers.
A.?Improved telescopes
B.?Advances in mathematics
C.?The discovery of a new star
D.?The position of Uranus in a pattern
解析：
(原文中)
Professor
The next planet out, Uranus—after Saturn. And look, Uranus fits in the next spot in the pattern pretty nicely, um, not perfectly, but close. And so then people got really excited about the validity of this thing and finding the missing object between Mars and Jupiter. And telescopes, remember, were getting better. So people went to work on finding objects that would be at that missing distance from the Sun, and then in 1801, the object Ceres was discovered.
问细节。教授一开始一直在介绍Bode's law，向学生说明天体的位置是有规律可循的，这种规律和位置预测了Ceres的存在，因此D选项正确;随即教授提到了望远镜的改进，使得人们可以更进一步地观察天体，寻找天体，并最终证实了Ceres的存在，因此A选项正确。
15.What does the professor imply about the asteroid belt?
A.?It is farther from the Sun than Uranus
B.?Bode believed it was made up of small stars
C.?It is located where people expected to find a planet
D.?Ceres is the only one of the asteroids that can be seen without a telescope
解析：
(原文中)
Not just one thing, but all the objects found at that distance from the asteroid belt. So the asteroid belt is the most famous success of this Bode’s Law. That’s how the asteroid belt was discovered.
问细节。从教授对于asteroid belt的描述中可知，它是依据Bode’s Law获得的最有名的发现。而Bode’s Law的主要内容是天体的位置是有规律可循的，因此可知，asteroid belt出现在了人们预测的位置上，C选项正确。
16.Why does the professor say this?
A.?To introduce an alternative application of Bode's Law
B.?To give an example of what Bode's law cannot explain
C.?To describe the limitaions of gravitational theory
D.?To contrast Bode's Law with a real scientific law
解析：
(原文中)
Um, well, this pattern is known as Bode’s Law. Um, it isn’t really a scientific law, not in the sense of predicting gravitation mathematically or something, but it’s attempting a pattern in the spacing of the planets, and it was noticed by Bode hundreds of years ago.
重听题。教授在本段详细说明了Bode’s Law与scientific law的区别，告诉学生scientific law应该是通过数学或者其他方式来测算的，而Bode’s Law并不是。故D选项正确。