【正文】 the geomagnetic fields or did the geomagnetic fields cause the sunspots? Or is there some other thing that caused both? And astronomers did eventually figure out what sunspots had to do with magnetic fields. Actually they are magnetic fields. And the fact that sunspots are magnetic fields accounts for their dark appearance. That’s because magnetic fields reduce the pressure exerted on the gases inside of them, making the spots cooler than the rest of the Sun’s surface. And since they are cooler, they are darker.詞匯：sunspots n. 太陽黑子heavenly body 天體flaw n. 缺陷；裂縫blemish n. 瑕疵；缺點(diǎn)hypothesis n. 假設(shè)prevailing adj. 流行的；盛行的square n. 正方形lopsided adj. 不平衡的feature n. 特色；特征random adj. 隨機(jī)的；任意的toss v. 投擲visible adj. 明顯的；看得見的keep tracks of 記錄；與保持聯(lián)系map v. 繪制地圖geomagnetic adj. 地磁的fluctuate v. 波動(dòng)；漲落題目：6. What is the lecture mainly about?解析：主旨題，文章按照時(shí)間順序介紹，主要講人們對(duì)太陽黑子的科學(xué)認(rèn)知的進(jìn)程。學(xué)生說東北部沒有他喜歡的專業(yè)——國際學(xué)，只有Central University有。答案：To explain his interest in a particular field of study4. What can be inferred about students who apply for the open position at the technologysupport helpdesk?解析：推測(cè)題，定位helpdesk. 文中說這個(gè)職位需要早晚及周末工作，可能什么事都要做一點(diǎn)，沒有常規(guī)的時(shí)間。s surface，注意That’s because of后面的內(nèi)容。s and Wolf39。答案：Different views of a type of sculpture popular in ancient Roman times13. According to traditional art, why did the Romans copy Greek sculpture?解析：細(xì)節(jié)題，定位traditional art，lacked creativity and skill同義替換為did not have sufficient skill.答案：Roman artists did not have sufficient skill to create original sculpture14. What is Gazda39。答案：The view of traditional art historians is probably incorrectConversation 2（場(chǎng)景分類——詢問論文）Narrow：Listen to a conversation between a student and his sociology professor.A: Well, I’m glad you redid your outline. I fed a few ments, but nothing you have to act on. （2）It’s in good enough shape for you to start writing your paper.B: Thanks! At first I was afraid all that prep work would be a waste of time.A: Well, especially with a challenging topic like yours: factors leading to the emergence of sociology as an academic discipline. There’s just so much history to consider。解析：To find out if some television shows will be popular with people in a certain age range4. What does the professor imply about the owners of Fox39。答案：To explain the significance of spices for medieval society.7. Based on the lecture, indicate whether the following is true about spices in Medieval Europe.Click in the correct box for each phrase.解析：文章結(jié)構(gòu)題。 you’ve probably seen it. It’s the North American wood frog. Now the wood frog’s not that easy to spot since it stays pretty to close to the ground, under leaves and things and it blends in really well with its background as you can see. But they are worth the effort because they do something very unusual, something you might not have even thought possible. OK, North American wood frogs live over a very broad territory or range. They’re found all over the northeasternUnited States and all throughCanada andAlaska, even inside theArctic Circle. No other frog is able to live that far and north. But wherever they live, once the weather starts to turn cold and the temperature starts to drop below freezing, as soon as the frog even touches an ice crystal or a bit of frozen ground, well, it begins to freeze. Yeah...yes to me. You look a little bit taken aback.Student：Wait, you mean it’s still alive but it freezes, solid?Professor：Well, almost. Ice forms in all the spaces outside the cells but never within a cell.Student：But… then how does its heart beat?Professor：It doesn’t.Student：But…then how could it…….Professor：You are gonna do such a thing? Well, that first touch of ice apparently triggers a biological response inside the frog. （14）That first of all starts drawing water away from the center of its body, so the middle part of the frog, its internal organs, its heart, lungs, liver, these start getting drier and drier while the water that’s being pulled away is forming a puddle around the organs just underneath the skin. And then that puddle of water starts to freeze. OK, up to now, the frog’s heart is still beating, right? Slower and slower but…and in those last few hours before it freezes, it distributes glucose, a blood sugar throughout its body, its circulatory system, sort of acts like antifreeze.Student：（17）A solution of antifreeze like you put in your car in the winter?Professor：Well, you tell me. In frogs, the extra glucose makes it harder for the winter inside the cells to freeze. So the cells stay just slightly wet, enough so that they can survive the winter. Then after that, the heart stops beating altogether. So is that the same?Student：I don’t really know, but how long dose it stay that way?Professor：Well, it could be days or even months, all winter in fact, but umm, see the heart really doesn’t need to do any pumping now because the blood is frozen too.Student：I just, I guess I just don’t see how it isn’t, you know, clinically dead.Professor：Well, that’s the amazing thing and how it revives is pretty amazing too. After months without a heartbeat, spring time came around again, the earth starts to warm up and suddenly one day, ping, a pulse, followed by another one, then another until maybe ten, twelve hours later, the animal is fully recovered.Student：（15）And does the thawing process have some kind of trigger as well?Professor：Well, we are not sure actually, the clearer thing is even though the sun is warning the frog up on the outside, its inside thaw out first, the heart and brain and everything. But somehow it all just happens that way every spring.Student：But after they thaw does it affect them like their lifespan?Professor：Well, hmm, we really don’t know a lot about how long a wood frog normally lives, probably just a few years but there is no evidence that the freezing process affects its longevity. It does have some other impacts though. In studies, we