托福聽力做題怎樣用題干關(guān)鍵詞定位答案

1、托福聽力做題怎樣用題干關(guān)鍵詞定位答案 托福聽力做題怎樣用題干關(guān)鍵詞定位答案?解題思路實(shí)例講解。今天給大家?guī)硗懈Ｂ犃ψ鲱}怎樣用題干關(guān)鍵詞定位答案，希望能夠幫助到大家，下面就和大家分享，來欣賞一下吧。托福聽力做題怎樣用題干關(guān)鍵詞定位答案?解題思路實(shí)例講解通過題干關(guān)鍵詞定位答案托福聽力是先聽音再看題，因此我們要根據(jù)題干關(guān)鍵詞，定位回我們自己的筆記、或者定位回我們對聽力材料的記憶來找答案。這樣的做法同樣適用于組織結(jié)構(gòu)題，要想把組織結(jié)構(gòu)題作對首先要在聽音過程中注意教授所作的比較;第二要看當(dāng)教授提到一些看似離題的內(nèi)容時(shí)，考生要明確教授想表達(dá)的觀點(diǎn)是什么。在托福聽力的組織結(jié)構(gòu)題中經(jīng)常利用一個(gè)例子進(jìn)行考察，

2、考察為什么要提到某個(gè)例子。給大家舉個(gè)例子：tpo11 lecture 2why does the woman refer to visiting her grandparents?a. to explain why she is interested in residential architectureb. to explain why she knows a lot about the history of cape codc. to explain why she is familiar with cape cod housesd. to explain why she enjoys v

3、isiting rural new england本道題目所對應(yīng)的原文為：professor: good! of course for a cape cod house, it might be even more accurate to say that form also follows climate. who knows what the climates like on cape cod?bob: cold in the winter.sue：and whenever i visit my grandparents, its really wet. its usually eithe

4、r raining or showing or foggy, and windy too，i guess because its so exposed to the ocean?通過學(xué)生與教授之間的一問一答，教授提的問題，仍然是與cape cod houses相關(guān)的話題?？梢钥闯鰏ue提到自己的grandparents，its really wet是為了例證自己的也知道cape cod house，然后又通過后面raining or showing or foggy, and windy，表明sue經(jīng)歷過這些天氣，因此sue說到grandparents是為了說明自己對cape cod hous

5、es很熟悉。從本道題目中可以看出，女士說到的例子是為了證明自己的是了解和熟悉的。2020托福聽力練習(xí)：軍艦鳥可連續(xù)飛行兩個(gè)月great frigate birds are extraordinary creatures. theyre seabirds with six-foot wingspans, yet they weigh only about three pounds. their preferred food: flying fishwhich they pluck out of the air above the waters surface. frigate birds fea

6、thers arent waterproof, so landing on the water to fish is a no-go.now, scientists have discovered that great frigate birds do something else amazing: they can fly for up to two months at a time without landing.researchers already knew that these birds took extended trips over the indian and pacific

7、 oceans to feed. but in a new study, scientists used tracking devices to follow the movement and vital signs of birds from the island of europa, near madagascar. they discovered that the birds have a highly specialized strategy for staying aloft.when they are traveling, most of the time, they flap v

8、ery infrequently their wings.henri weimerskirch, an ecologist at the national center for scientific research in france.in fact, what they are doing, they are doing sort of a roller coaster flight where they take altitude. even they can climb up to 3,000 or 4,000 meters, and when they climb, they do

9、not flap their wings at all.weimerskirch and his colleagues found that the birds climb currents of rising air associated with cumulus clouds, circling upwards the way hawks and vultures do over land. then they glide back down again, hardly flapping. by using atmospheric conditions to their advantage

10、, the birds covered an average of 420 kilometers a day almost effortlessly. the study is in the journal science.the researchers also discovered that the birds endure some harrowing conditions on their voyage, including some thrills and chills.when you enter into the clouds, theres a lot of turbulenc

11、e. after, when you see from the recording on the logger of the bird, when they are at 4,000 meters, the temperatures are negative. its a tropical bird. its a bird that has no specific down like geese that are operating in the arctic. so they are encountering sort of a polar temperature, but its a ty

12、pical tropical bird.of course, the birds have to eat during their journey. the researchers found that diving down to the sea surface to snatch a meal consumed most of the birds energy, even though it only occupied about 10 percent of their time.when they are climbing, they have a period where there

13、is no movement at all during several minutes. and so, during this time is probably the time when they are sleeping.thats rightlike many others who make long-distance flights, great frigate birds catch a little shut-eye along the way.大軍艦鳥是一種特別的生物。它們屬于海鳥，擁有長達(dá)6英尺的翼展，但重量只有3磅。大軍艦鳥偏愛的食物是可以在海面上捕獲的飛魚。軍艦鳥的羽毛

14、并不防水，所以讓它們降落在水面上捕魚是不可能的?，F(xiàn)在，科學(xué)家發(fā)現(xiàn)了軍艦鳥令人驚訝的能力：它們能在空中連續(xù)飛行兩個(gè)月不著陸。研究人員已經(jīng)知道這些鳥會在飛過印度洋和太平洋的長途跋涉中覓食。在一項(xiàng)新研究中，科學(xué)家使用追蹤設(shè)備追蹤馬達(dá)加斯加附近歐羅巴島上的軍艦鳥的活動和生命體征。他們發(fā)現(xiàn)，軍艦鳥的高空飛行擁有高度專業(yè)化的策略?！帮w行中的大部分時(shí)間，它們很少拍打翅膀?！焙嗬S莫斯克奇是法國國家科學(xué)研究中心的生態(tài)學(xué)家?！笆聦?shí)上，它們所做的就是在它們所飛行的高度像過山車一樣飛行。它們甚至可以爬升到 3000或 4000米的高度，而它們在爬升時(shí)根本不拍打翅膀?！本S莫斯克奇和他的同事發(fā)現(xiàn)，這些軍艦鳥借助積云形成

15、的上升氣流盤旋爬升，就像老鷹與禿鷲一樣。然后它們會向下滑行，幾乎不需要拍打翅膀。利用對它們有利的大氣條件，軍艦鳥平均每天可以毫不費(fèi)力地飛行420公里，這項(xiàng)研究結(jié)果發(fā)表在科學(xué)雜志上。研究人員還發(fā)現(xiàn)，軍艦鳥在飛行途中忍受了一些痛苦的條件，包括刺激和寒冷的情況?！斑M(jìn)入云層以后會遇到很多亂流。查看軍艦鳥追蹤器上的記錄時(shí)你會發(fā)現(xiàn)，它們在4000米的高度飛行時(shí)，溫度已經(jīng)在零度以下。軍艦鳥是一種熱帶鳥，就像在北極生活的鵝一樣，軍艦鳥也沒有確切的活動時(shí)間，因此它們會遇到極低的溫度，但軍艦鳥是典型的熱帶鳥?！碑?dāng)然，軍艦鳥肯定要在途中覓食。研究人員發(fā)現(xiàn)，軍艦鳥會潛到海面上捕食，這消耗了其大部分能量，即使這只占它們

16、旅途時(shí)間的10%?！霸谂郎龝r(shí)，軍艦鳥有幾分鐘的時(shí)間處于完全不活動狀態(tài)。這表明這段時(shí)間可能是它們的睡眠時(shí)間?！睕]錯，就像許多其他人乘坐長途航班時(shí)一樣，軍艦鳥也會在途中打個(gè)盹兒。重點(diǎn)講解：1. in fact 事實(shí)上，其實(shí);例句：she is by no means poor: in fact, shes quite rich.她可不窮，其實(shí)她很闊。2. be associated with (與)相關(guān)的;相聯(lián)系的;例句：in childrens minds, summers are associated with picnics.在孩子們看來，夏天總是和郊游連在一起的。3. to ones ad

17、vantage (尤指轉(zhuǎn)變不利情況使之)對有利;例句：it will be to his advantage if he studies hard.假如他努力學(xué)習(xí)，就會對他有利。4. even though 即使;盡管;縱然;例句：i like her even though she can be annoying.盡管她有時(shí)很惱人，但我還是喜歡她。2020托福聽力練習(xí)：地衣含有三種以上成分lichens. theyre probably the most common example of two organisms living in a symbiotic relationship. t

18、heres a fungus and a photosynthesizing partner, like algae. its a bond that was born, as they say, when alice algae, took a lichen to freddie fungus.but that simple description covered up a larger mystery: how could two different lichen species combine the same building blockssame fungus, same algae

19、and yet they look very different, have very different chemistry, and some of them even have distinctly different ecology.toby spribille, an evolutionary biologist at the university of montana, and the university of graz in austria.he and his colleagues studied two lichen species that fit that bill.

20、same underlying parts, different color and chemistry. they ground the lichens up, and then analyzed their rna. what they expected to find was two genomes: one fungus, one alga. and what we found is that, at the end of a lot of analysis, we had was three genomes, not two.and this was really surprisin

21、g.the third genome was from a type of yeast. and the more yeast was present, the more yellowishand more toxicthe lichen was. the study appears in the journal science.but how could scientists spend so many years studying these lichensand still miss this crucial third species? spribille says it could

22、have been the type of genetic sequencing. previous studies relied on dna barcodes, which only sample some of the genome, to identify the underlying fungus and alga. sort of like identifying the occupants of a completely dark room by shouting out a few names and seeing who answers.what spribille did,

23、 instead, was just turn all the lights on, with whole genome sequencing, revealing the identity of all occupants, and in doing so, we eliminated anything that required going in and calling out somebodys name so to speak.as for whether some lichens might have four, five species? i certainly wouldnt r

24、ule it out at this point. because this study indicates lichens are truly more than the sum of their parts. including, of course, the parts we still dont know about.地衣可能是兩種生物以共生關(guān)系存在的最常見例子。地衣由1種真菌和1種光合生物(如藻類)組成。這種聯(lián)系是固有的，就像他們說的，“愛麗絲藻類”和“弗雷迪真菌”共生形成地衣。但是這種簡單的描述掩蓋了一個(gè)更深奧的秘密：兩種不同的地衣物種如何結(jié)合同樣的成分即同樣的真菌和同樣的藻類，“

25、而且，它們看上去非常不同，它們的化學(xué)成分也不同，有些地衣甚至有著明顯不同的生態(tài)。”托比斯普利比爾是蒙大拿大學(xué)和奧地利格拉茨大學(xué)的進(jìn)化生物學(xué)家。他和同事對符合上述條件的兩種地衣進(jìn)行了研究。這兩種地衣的基本成分相同，但顏色和化學(xué)成分不同。他們將地衣磨碎，然后分析了它們的核糖核酸。他們原以為會發(fā)現(xiàn)兩個(gè)基因組：一個(gè)是真菌，另一個(gè)是藻類?！暗詈?，在進(jìn)行大量分析以后，我們發(fā)現(xiàn)的是三個(gè)基因組，而不是兩個(gè)。這真是太讓人驚訝了?！钡谌齻€(gè)基因組來自于一種酵母。酵母的含量越多，地衣顏色越黃，毒性也越強(qiáng)。這項(xiàng)研究發(fā)表在科學(xué)雜志上。但是，科學(xué)家們怎么會在研究地衣多年后仍未發(fā)現(xiàn)這至關(guān)重要的第三物種?斯普利比爾表示，可能是由于基因測序的方法不一樣。此前的研究依賴于dna條形碼，只是對這一基因組中的一部分進(jìn)行抽樣調(diào)查，用以確認(rèn)潛在的真菌和藻類。這就好像在一間完全黑暗的房間里，通過喊出幾個(gè)名