小编为了帮助
TPO15 listening 问题解析
Section 1
TPO15-L1 Conversation 1
1. Why does the student go to the campus newspaper office?
O To turn in outlines of possible articles
O To find out when his article will be printed in the newspaper
O To find out if he got a position as a reporter
O To get help with an assignment for his journalism class
答案：C
解析：(原文中)I sent them in about a week ago, but I haven't heard anything back yet, so, so I thought I'd stop by and see, but I guess you haven't looked at them yet. 男学生报名做reporter，写好的outline一周前已经提交，但是没有收到答复，他来看一下情况。
原文如下：I sent them in about a week ago, but I haven't heard anything back yet, so, so I thought I'd stop by and see, but I guess you haven't looked at them yet。故正确答案为C。
2. Why does the student want to write for the campus newspaper?
O He wants to earn some money.
O He wants to learn about the newspaper business.
O He wants to share his enthusiasm for physics.
O He thinks the experience will be valuable.
答案：D
解析：(原文中)I'd like the experience. It would look good on my resume. 男学生知道当reporter是没有报酬的，但是这有利于他写个人经历，比较重要。所以答案选D。原文如下：I'd like the experience. It would look good on my resume.
3. The student mentions the proposed tuition increase as a possible topic for the newspaper. What does the adviser imply about the topic?
O The news editor thinks that the topic is not suitable for a new reporter.
O The news editor was impressed by the student's outline about the topic.
O There is not enough information to write an article about the topic.
O The topic has already been assigned to another reporter.
答案：D
解析：(原文中)Oh, it looks like we've got that covered.男学生提到了两个topic，但是第二个已经有人写了，他要继续写第一个。原文如下：Oh, it looks like we've got that covered.所以故正确答案为D。
4. What will the student write about in his first article for the newspaper?
O The physics department's plans for attracting more students
O The university's plan to offer more physics courses
O The importance of physics in our daily lives
O The opinions of professors on the recent changes to introductory physics courses
答案：A
解析：(原文中)Max will want to talk to you but I am sure he will tell you to find out things like why the physics department's worried about enrollment. Has the number of students been getting smaller in recent years? By how much? What kinds of plans are they considering to address this problem?女指导老师猜测男学生要继续深化对物理系吸引学生的措施的报道。四个选项中A项是最概括最全面的。
原文如下：Max will want to talk to you but I am sure he will tell you to find out things like why the physics department's worried about enrollment. Has the number of students been getting smaller in recent years? By how much? What kinds of plans are they considering to address this problem?故正确答案为A。
5. What does the adviser imply when she says this:
O She is not responsible for evaluating proposed articles.
O She did not tell Max about the student's interest in joining the staff.
O Max recently became the editor of the newspaper.
O Max has been very busy lately.
答案：A
解析：(原文中)Oh, Max, the news editor. He looks at all the submissions.指导女老师说，新编辑Max负责他们所提交的outline，言外之意她是不直接负责这个的。
原文如下：Oh, Max, the news editor. He looks a t all the submissions.
TPO15-L2 Psychology
6. What is the lecture mainly about?
O Methods people use to eliminate distractions
O The area of the brain responsible for blocking distractions
O The usefulness of questionnaires in assessing distractability
O Research about how the brain deals with distractions
答案：D
解析：全文主旨题，全文讲的是关于大脑处理分散注意力的研究，D项最符合题意。教授没有A用于消除注意力分散的方法，全文都没有提到说消除消除注意力分散的方法，因此A项错误。，B,C项严重偏离主旨。
7. According to the professor, what are two weaknesses of the Cognitive Failures Questionnaire?
Click on 2 answers.
□ It relies on subjective reporting.
□ It assesses a limited number of situations.
□ It does not assess visual distractions.
□ It does not account for factors other than distractability.
答案：A,D
解析：(原文中)And that's part of the problem with the CFQ. It doesn’t take other factors into account enough, like forgetfulness. Plus you really can’t say you are getting objective scientific results from a subjective questionnaire where people report on themselves. Objective 客观的;Subjective主观的。 D项比B项更贴近原意。演讲者明显的说出了两个缺点，并基于第二个缺点提出另外一个实验。
原文如下：And that's part of the problem with the CFQ. It doesn’t take other factors into account enough, like forgetfulness. Plus you really can’t say you are getting objective scientific results from a subjective questionnaire where people report on themselves. Objective 客观的;Subjective主观的 D比B更贴近原意。
8. What hypotheses about distraction and the brain were Lavie's experiments involving star fields designed to investigate?
Click on 2 answers.
□Whether the capacity of the brain to process irrelevant information varies from person to person
□Whether the brain perceives information that is irrelevant to the performance of a task
□Whether the brain deals with distractions by categorizing irrelevant information as low priority
□Whether the visual cortex is activated during the sensation of movement
答案：B,C
解析：(原文中)原文如下：
Lavie found that during the task area of V5 was active, so people were aware of the moving star field. That means people were not blocking out the distraction. So doesn't that mean that the first hypothesis you mentioned was wrong, the one that says we don't even perceive irrelevant information when we are concentrating? That was quite a surprise and it approved that the second hypothesis – that we do perceive everything all the time but the brain categorizes distractions differently, well, that wasn't true either. 通过关键词star fields，迅速定位this time the distraction was a moving star field in the background，后面则说该研究的意义这句话是总结，前面的内容就是被否定的两个hypothesis，也就是我们需要寻找的答案。通过同义替换，可以很快找出答案是BC。，两个选项则对应所否定的两个结论。所以结论句一定是重中之重!
9. What did Lavie's scans of subjects' visual cortexes reveal?
O Area V5 became less active when tasks became more difficult.
O The presence of the star field did not affect activity in area V5.
O Area V5 became more active as more information appeared on the screen.
O Stimulating area V5 interfered with subjects' ability to perceive motion.
答案：A
解析：(原文中)Lavie also discovered that as she made the task more difficult, V5 became less active, so that means that now people weren’t really noticing the star field at all.关键词scan，对应听力原文中V5 scaning得出的结论。根据原文，
原文如下：Lavie also discovered that as she made the task more difficult, V5 became less active, so that means that now people weren’t really noticing the star field at all.
A选项完全对应，B选项说的不是结论，而是一个现象，即便这样也不是不影响。C项说反了，D项未提及没提。
10. Why does the professor mention a highway?
O To compare two experiments designed to study distraction
O To give an example of when area V5 might be activated
O To describe a limitation in the brain's processing capacity
O To make a point about the effect of distractions on driving
答案：C
解析： (原文中)Lavie thinks the solution lies in the brain’s ability to accept or ignore visual information. She thinks its capacity is limited. I t ’ s like a highway. When there are too many cars, traffic is stopped. 细节类比题，话说中间出现举例子都是很重点的，往上一层或下一层找结论句~
原文如下：Lavie thinks the solution lies in the brain’s ability to accept or ignore visual information. She thinks its capacity is limited. I t ’ s like a highway. When there are too many cars, traffic is stopped.教授将大脑比作高速公路，当车过多了，高速公路就堵塞了。说明大脑的处理容量有限。
11. What is the professor's opinion of Lavie's work?
O She thinks it resolves most of the major questions about distraction.
O She feels it is of limited use because of flaws in the study designs.
O She believes it has changed the direction of research on distraction.
O She thinks its findings can be applied only to visual distraction.
答案：D
解析：(原文中)Now that may be the correct conclusion for visual distractions, but more research is needed to tell us how the brain deals with, say, the distractions of solving a math problem when we are hungry or when someone is singing in the next room. 此题最好采用排除法，B,C都没有提及，而A也没说解决绝大多数问题，而答案应该是D，Professor Lavie 的关于视觉分散注意力的结论可能是正确的，但是更多的比如解决问题时的分心也是需要进一步研究的。原文如下：Now that may be the correct conclusion for visual distractions, but more research is needed to tell us how the brain deals with, say, the distractions of solving a math problem when we are hungry or when someone is singing in the next room.
TPO15-L3 Geology
12. What is the lecture mainly about?
O Recognizing when one geologic epoch ends and another begins
O How geologists determine the age of Earth
O Whether humans have affected Earth's climate
O Identifying elements that affect the formation of sediment layers
答案：A
解析：(原文中)We examine these layers to learn about different geologic time periods including when they began and ended.
主旨题。，开头一定要认真听的，总起句。而后则是三个时期的确定教授说今天讲课的内容是三个不同地质时期，包括它们的起止时间，A项最符合文意。。 B,D项教授文章未提及没提，C项不是主旨，而是其中一个重要细节。
原文如下：
We examine these layers to learn about different geologic time periods including when they began and ended.
13. Why does the professor mention the Pleistocene epoch?
O To explain how sediments change during an ice age
O To give an example of a well-defined geologic epoch
O To describe how certain environmental conditions affect erosion rates
O To describe the factors that influence the naming of geologic epochs
答案：B
解析：(原文中)We examine these layers to learn about different geologic time periods including when they began and ended. For example, from about 1.8 million years ago to around 11 thousand years ago was the Pleistocene epic. 举例题，遇到这类题目，答案往往在定位句的上几句或者在最后的一定往距离的上一层或者之后的总结句中找。，教授前面在说全文都是地球不同地质时期的怎样确定，然后紧接着讲the Pleistocene epoch，自然是因为the Pleistocene epoch起止时间十分明确，适合举例。
原文如下：We examine these layers to learn about different geologic time periods including when they began and ended. For example, from about 1.8 million years ago to around 11 thousand years ago was the Pleistocene epic.
14. Researchers study sediment in order to learn about the characteristics of past geologic epochs. What does the professor say that sediment reveals about a particular epoch?
Click on 2 answers.
□ The climate on Earth when the sediment formed
□ The places on Earth with the highest amounts of rainfall
□ The level of the oceans at the time
□ The organisms that lived when the sediment formed
答案：AD
解析：(原文中)During this epic, sediment was made by the kind of erosion and weathering that happens when the climate is colder, and part of those sediments are fossils of plants and animals that lived at that time. 细节题，根据关键词sediment定位出题句。，由两方面组成sediment揭示了地质时期的两个方面：气候，动植物情况，因此答案选AD。
原文如下：During this epic, sediment was made by the kind of erosion and weathering that happens when the climate is colder(A), and part of those sediments are fossils of plants and animals(D) that lived at that time.
15. According to the professor, what is the significance of the year 1800 C.E.?
Click on 2 answers.
□ The human population reached 1 billion.
□ The Anthropocene epoch was first described.
□ Industrialization began to influence Earth's environment.
□ There was a significant change in the amount of sediment deposited around the world.
答案：AC
解析：句中有并列、递进关系的都喜欢出双选题
原文如下：The idea is that around the year 1800 C.E. 1800 CE the human population became large enough, around a billion people, that its activities started altering the environment. This was also the time of the industrial revolution, which brought a tremendous increase in the use of fossil fuels such coal. 一般来说，有并列、递进关系的句子处容易出双选题。1800 C.E. 那段时期，出现了两个重大变化，一个是人类数量达到10亿，另一个是工业化开始出现。因此答案选AC。B，D明显原文没说项原文未提及。
16. What does the professor imply about the spread of agriculture 8,000 years ago?
O It was the true beginning of the Holocene epoch.
O It was when greenhouse gases were at their lowest levels.
O It was not a major cause of population growth.
O It did not cause as big an environmental impact as some researchers say.
答案：D
解析：(原文中)Early farmers started clearing forests and livestock produced a lot of extra methane. But I want to stress this is just a hypothesis. The idea that early humans could have had such a major effect, well I'm just not sure we can compare it with the industrial age. 细节举例题，关需要找前后结论的话，关键词8000年以前，主要讲的是早期农民改造地球对农业的的影响。原文如下：Early farmers started clearing forests and livestock produced a lot of extra methane. But I want to stress this is just a hypothesis. The idea that early humans could have had such a major effect, well I'm just not sure we can compare it with the industrial age.教授说
言外之意，8000年之前确实产生了主要影响但是还无法确定能和当今工业社会相比，言外之意就是过去影响再大，也没有现在的影响大。
17. What does the professor say about future researchers?
O They may not agree that humans have had an important effect on Earth's surface.
O They will not have reliable evidence of what is happening today.
O They will determine when the Anthropocene epoch began.
O They will make predictions about when the Anthropocene epoch will end.
答案：C
解析：(原文中)It'll be future researchers who have a better perspective and will be able to really draw a line between the Holocene and the Anthropocene epics. 考了讲座再次考了结尾的结论。
原文如下：It'll be future researchers who have a better perspective and will be able to really draw a line between the Holocene and the Anthropocene epics
在两个时代之间画一条线，自然是标志着上一个时代的结束，下一个时代的开始，而the HoloceneH是上一个时代，the AnthropoceneA是下一个时代。
Section 2
TPO15-L4 Conversation 2
1. Why does the woman go to see her professor?
O To tell him about an athletic achievement
O To find out the best approach to studying for a test
O To ask a question about a laboratory project
O To discuss her performance on a biology exam
答案：D
解析：(原文中)
Student: No, I … I really do make time to study. And I actually study more for this class than I do for all my other classes. But I didn’t see the grade I expected on my mid-term exam, which is why I came by.
Professor: Well, you "didn't do badly on the exam, but I agree it did not reflect your potential.
学生对话开始后说了很多自己在体育的成就，然后说到她其实也花了时间在学习上，但是成绩并不理想。自己猜测的可能原因，故重点应该是解释原因其实是在和教授解释成绩不理想的原因。
原文如下：S: But I didn’t see the grade I expected on my mid-term exam, which is why I came by. P: Well, you "didn't do badly on the exam, but I agree it did not reflect your potential.
2. What does the professor imply when he mentions his experience playing soccer in college?
O The woman should participate in a sport that takes less of her time.
O The woman may not have enough time to study for class.
O The woman is not trying hard enough to do well in the class.
O The woman should be satisfied with the results of her exam.
答案：B
解析：(原文中)Professor:You know I played soccer in college and my biggest challenge, and I didn’t always succeed, was getting my studying in during soccer season. Are you having a similar …
Samantha: No, I … I really do make time to study.
教授害怕学生因为其时间安排的不平衡而影响学习，所以以并以自己过去的经历作例子，希望学生多花些时间在学习上。答案选B。
原文如下：Professor:You know I played soccer in college and my biggest challenge, and I didn’t always succeed, was getting my studying in during soccer season. Are you having a similar …
Samantha: No, I … I really do make time to study.
3. What did the woman study in her laboratory project?
O The best methods for preserving samples of onion cells
O The differences between onion cells and other plant cells
O The process of cell division in an onion
O The different ways that onion cells can be diagrammed
答案：C
解析：(原文中)I was so impressed with the way you handle the microscope and the samples of onion cells, and with how carefully you observed and diagramed and interpreted each stage of cell division. 细节题，定位学生研究内容。根据同义替换，找出正确答案是C。
原文如下：I was so impressed with the way you handle the microscope and the samples of onion cells, and with how carefully you observed and diagramed and interpreted each stage of cell division.
其实这一句话也适合多选题，前半句是实验方法，后半句是实验内容，只问了实验内容。
4. What does the professor say about the results of the brain research?
O Several short study sessions are more effective than one extended study session.
O Studying in the library increases the brain's ability to absorb details.
O Studying for extended periods of time is good exercise for the brain.
O Students who excel at laboratory work usually perform well on exams.
答案：A
解析：(原文中)There is research that shows that after about an hour of intense focus, your brain needs a break. 教授谈及学生考试之前通宵的习惯不好，用一个研究做例子，告诉学生每学一个小时休息一下，就是说间断多时间学习效果更好。
原文如下：There is research that shows that after about an hour of intense focus, your brain needs a break.
5. At the end of the conversation, why does the professor return to the topic of running on the track team?
O To suggest that the student take a break from it for a few weeks
O To give an example of how exercise affects memory
O To illustrate the point he is making about study habits
O To find out if the next track meet will interfere with the next exam
答案：C
解析：结尾考了个比喻题, 那就是找本体的结论句。这把大脑比成肌肉很好理解，不能一次用脑过度，要时常练。没有本体的结论句，那就选比喻的意义。
(原文中)原文如下：Think of your brain as : a muscle. If you didn't practice regularly with your track team, and then tried to squeeze in three weeks’ worth of running practice just the day before a track meet, how well do you think you'd perform in your races? 教授把大脑比成肌肉很好理解，说明不能一次用脑过度，要时常练习。然后又回到了跑步的话题，也是为了说明他之前的观点：练习要张弛有度。
TPO15-L5 Art History
6. What is the lecture mainly about?
O How Archimedes was identified as the author of some ancient texts
O The recovery of some ancient writings on mathematics
O Differences among various writing materials used in the Middle Ages
O Techniques for restoring ancient manuscripts
答案：B
解析：第一题出了全文主旨题，文章第一段引出主题，之后全文讲的就是古代写书用的羊皮纸，而且由于其特性，阿基米得写的书也可以被们通过高科技解译出来了阿基米德写的书也可以通过高科技解译出来了。虽然没有原文直接对应的听力原文，但是A，C，D项都在文中没有提及，因此可以通过排除法得出正确答案是B。
7. What are two points the professor makes about parchment?
Click on 2 answers.
□ It is more long lasting than paper.
□ It was inexpensive to produce during the Middle Ages.
□ It was the material Archimedes used for his writings.
□ Its use for books decreased after the 1400s.
答案：A, D
解析：细节题
原文如下：(原文中)During the 1400s, when printing was being developed, paper became the predominant material for books in Europe, but prior to that, it was parchment .Parchment is durable, much more so than paper, and it could be reused which came in handy since it was a costly material and in short supply. 细节题。结合原文进行同义替换，可以知道正确答案是AD。C选项是错误的，，原文说Archimedes' writings were originally done on papyrus scrolls. Then in the 10th century, a scribe made a copy on parchment of some of his texts and diagrams including, as it turns out, The Method .阿基米得阿基米德的原稿不是写不是在羊皮纸上写的，只有副本是在羊皮纸上,副本是。
8. What does the professor imply when he explains the washing and scraping methods that were used to remove ink from a parchment surface?
O Washing made parchment more able to retain newly applied ink than scraping did.
O Washing was less effective than scraping as a means of permanently erasing ink.
O The scraping method was used in the creation of the Archimedes palimpsest.
O Neither method completely erased the original text.
答案：B
解析： 理解隐藏含义题了，介绍了两种去除方法，产生了一个比较。
(原文中)如下： It was customary to scrape away the surface of the parchment with unabrasive, which completely wiped out any writing that was there. But earlier in the Middle Ages, the original ink was usually removed by washing the used parchment with milk. 这道题考察的是理解隐藏含义。教授介绍了两种去除方法，并进行了比较，能够清除得很干净(completely wiped out)的是scrape。
A更容易用于墨水没说，C用的应该是milk，D中的neither就不正确了。因为我们的scrape有completely。
9. What type of book became known as the Archimedes palimpsest?
O A history book
O A physics book
O A prayer book
O An artist's book
答案：C
解析： 细节题。
(原文中)原文如下：About 200 years later in the 12th century, this parchment manual script became a palimpsest when a scribe used the parchment to make a prayer book. So the pages, the pieces of parchment themselves, had been preserved. But the Archimedes' text was erased and written over, and no one knew it existed. It wasn't until 1906 that a scholar came across the prayer book in a library and realized it was a palimpsest. But in 1998, a book of prayers from the Middle Ages sold in an art auction for a lot of money, more money than anyone would pay for a damaged book from the 12th century.教授提到，阿基米德的palimpsest的原稿被擦掉了，做成了prayer book，直到1906年才被重新发现。因此故正确答案为C。
10. What does the professor imply about the various techniques used to view Archimedes' text?
O The students should be familiar with most of the techniques.
O Different techniques were used to analyze the iron content of ancient ink.
O The use of ultraviolet light was more damaging than the other techniques.
O X-ray imaging was more effective than the other techniques.
答案：D
解析：原文虽然介绍了很多方法，A的对学生的要求原文没有说，B的针对铁用多种方法是不对的，C原文没提损坏。
原文如下：(原文中)But actually, it was a physicist who came up with a method that was a breakthrough. He realized that the iron in the ancient ink would display if exposed to a certain X-ray imaging method。原文虽然介绍了很多方法，但是用X射线测定墨水中铁元素的方法是最好的，a breakthrough。因此D项最正确。
11. What does the professor imply about the significance of the Archimedes palimpsest?
O It is significant because it contains what may be Archimedes' most important work.
O It is significant because it proves that a certain mathematics text was written by Archimedes.
O It is significant because it is the oldest one ever discovered.
O It is significant because it is the first one to be completely deciphered.
答案：A
解析：推测主旨题，在原文中没有明确对应的情况下，感觉用排除法比较好，A没有什么问题，B原文没有说这个副本证明了一部分内容是阿基米得写的，C原文没说是最早的，D原文没说是第一个被解读的。
(原文中)原文如下：This was extremely fortunate, since later on, the original papyrus scrolls disappeared. 本题需要推测讲座主旨，在原文中没有明确对应的情况下，最好使用排除法。A项没有什么问题，跳过先看B项。教授没有说这个副本证明了一部分内容是阿基米德写的，B项错误。C项中，讲座并没有提过阿基米德的手稿是目前发现的最早的手稿。同样的，讲座也没有说阿基米德的手稿是第一个被解读的。综合一下，只有A项是最符合的。
TPO15-L6 Biology
12. Why does the professor discuss the exploration of hydrothermal vents?
O To show how the exploration helped researchers to determine the composition of ocean water
O To show how the exploration challenged an assumption about biological communities
O To compare two competing theories concerning chemosynthesis
O To compare the life cycle of underwater plants to the life cycle of underwater animals
答案：B
解析：主旨题，本文主要讲的就是一个关于深海热液喷泉口关于生命的探究，而竟然发现了大量的生物，震惊了科学界。
原文如下：(原文中)First, I ’‘d like to talk about some discoveries that have challenged one of these fundamental assumptions about what you need in order to have a biological community。主旨题，本文主要讲的就是一个关于深海热液喷泉口关于生命的探究，而竟然发现了大量的生物，震惊了科学界。所以故正确答案为B。
13. What are three of the conditions of water near hydrothermal vents that made researchers think they would not find living organisms there?
Click on 3 answers.
□ Extreme heat
□ Extreme pressure
□ Fast currents
□ Lack of minerals
□ Lack of sunlight
答案：A,B,E
解析：(原文中)And not only the extreme pressure, but also the extreme temperature of the water around these vents. If the lack of sunlight didn't rule out the existence of a biological community down there then these factors certainly would, or so they thought. 细节举例题了，教授很很明确的连续连着提出了三个原因：extreme pressure，extreme temperature和lack of sunlight。 原文如下：And not only the extreme pressure, but also the extreme temperature of the water around these vents. If the lack of sunlight didn't rule out the existence of a biological community down there then these factors certainly would, or so they thought.所以故ABE项正确。
14. What does the professor imply about the researchers' reaction to the biological
community discovered on the ocean floor?
O They were surprised at the large variety of organisms living near hydrothermal vents.
O They were surprised to find any bacteria living without sunlight.
O They were disappointed at not finding any animal life.
O They could not agree on the significance of the data that they collected.
答案：A
解析： 暗示题，当科学家们都觉得深海岩石口不应该有生命，但是却发现了，还有300种，故正常的反应就应该是惊讶了。
(原文中)原文如下：They did indeed, something like 300 different species. 暗示题，当科学家们都觉得深海岩石口不应该有生命，但是却发现近300种不同的物种。因此正常的反应就应该是惊讶了。
15. According to the professor, what is the role of chemosynthesis in biological communities that are found near hydrothermal vents?
O It enables organisms to convert hydrogen sulfide into food.
O It enables organisms to convert tiny amounts of light into energy.
O It enables organisms to withstand large amounts of carbon dioxide.
O It enables organisms to regulate their temperature.
答案：A
解析：(原文中)Now these bacteria actually combine the hydrogen sulfide with the carbon dioxide and this chemical reaction is what produces organic material which is the food for larger organisms.
段落主旨题了。， 找准意思，在热液温泉口附近的细菌通过化学合成，将是硫化氢和二氧化碳合成食物。正确答案选A。B,C,D原文没提。
原文如下：Now these bacteria actually combine the hydrogen sulfide with the carbon dioxide and this chemical reaction is what produces organic material which is the food for larger organisms.
16. Why does the professor mention the bacteria that live inside a tube worm?
O To give an example of organisms that pose a threat to tube worms.
O To explain what provides the organic material that tube worms use for energy.
O To give an example of other organisms that can withstand extreme heat.
O To give an example of organisms that are involved in both chemosynthesis and photosynthesis.
答案：B
解析：(原文中)These bacteria that live inside the tube worms, the tube worms provide them with hydrogen sulfide and carbon dioxide. And the bacteria, well the bacteria kind of feed the tube worms through chemosynthesis, remember, that chemical reaction I described earlier. 细节题，解题关键句是kind of feed the tube worms through chemosynthesis给了一个例子，问为什么提这个，故应该找例子的原因句。
原文如下：These bacteria that live inside the tube worms, the tube worms provide them with hydrogen sulfide and carbon dioxide. And the bacteria, well the bacteria kind of feed the tube worms through chemosynthesis, remember, that chemical reaction I described earlier.所以教授提到生活在tube worm里面的细菌，是为了说明生活在温泉口附近的生物的能量来源。正确答案为B。
17. What does the professor imply when she says this:
O She will review information from the assigned chapter.
O She will present additional information related to the assigned chapter.
O The quiz on the assigned chapter will be longer than other quizzes.
O The class has spent too much time on the assigned chapter.
答案：B
解析：(原文中)we can just review for the weekly quiz and move on to the next chapter, right? Well, not so fast. 重听复句子题，联系下文，老师只是是补充了一些知识，而不是在复习或者小测试，小册，更不是说花的时间已经够多了。
原文如下：we can just review for the weekly quiz and move on to the next chapter, right? Well, not so fast.所以故正确答案为B。
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