說到托福聽力材料，大家可能會首先想到托福聽力真題或者官方真題Official，但是其實(shí)除了這些練習(xí)材料外，我們還可以利用一些其他的資料來提升，下面小編就和大家分享托福聽力如何利用好視頻聽力資料，來欣賞一下吧。

托福聽力如何利用好視頻聽力資料?

托福聽力提升視頻素材之 TED

TED，全名Technology, Entertainment, and Design,是一臺在全世界范圍內(nèi)展開的演講欄目。演講嘉賓為各行各業(yè)的頂尖人物，從維基百科創(chuàng)始人，到非洲女性作家，到觸屏技術(shù)的創(chuàng)新者，到思考數(shù)學(xué)教育方法的高中教師，到研究集體行動的經(jīng)濟(jì)學(xué)家。他們代表了人類挑戰(zhàn)自我的前沿，內(nèi)容包括教育文化科技藝術(shù)所有領(lǐng)域的創(chuàng)新。

如此五花八門的題材，正符合了托福聽力中千變?nèi)f化的題目。常常有考生擔(dān)心一旦遇上自己并不熟悉的領(lǐng)域，比如文科生遇上分子結(jié)構(gòu)或者計(jì)算機(jī)，理科生遇上歐洲史或者英語文學(xué)。因?yàn)槊總€(gè)人的興趣點(diǎn)不盡相同，一旦遇上了平時(shí)不甚關(guān)注的話題，其實(shí)用中文解釋也只能一知半解。所以即使聽力中的生詞只是專有名詞，還是會十分影響考生對于通篇的理解，從頭到尾三五分鐘都是迷迷糊糊。

針對托福聽力涵蓋面甚廣的情況，考生想要面面俱到其實(shí)是強(qiáng)人所難，況且這也并非托?？荚嚨谋疽狻？荚噧?nèi)容其實(shí)只是常識領(lǐng)域(common sense)，所以考生大可不必抱起百科全書的大部頭從地殼形成、恐龍誕生一直看到后現(xiàn)代藝術(shù)。

TED本身多樣的題材正好為大家提供了簡單涉獵各個(gè)領(lǐng)域的機(jī)會。同時(shí)演講一般不超過15分鐘，短的只有5分鐘，這恰好訓(xùn)練了考生在短時(shí)間內(nèi)理解，進(jìn)而掌握和思考一個(gè)全新領(lǐng)域的能力。筆者建議每一集TED至少要看兩遍，其中遍不開字幕，只求盡力聽一個(gè)囫圇，看自己能夠不借助字幕了解多少，無需在生詞上計(jì)較，更多的是聯(lián)系整體語感;第二遍則要打開中英字幕，一一解讀自己聽不明白的生僻詞和本領(lǐng)域的專有名詞。日積月累，生僻領(lǐng)域也就不再生僻。

此外，各個(gè)方面略知一二也為托福閱讀打好基礎(chǔ)。試想如果一開篇就發(fā)現(xiàn)閱讀討論的話題自己其實(shí)已經(jīng)有了背景知識，那么無論從答題的把握，還是對手的心理，都有很大幫助。

托福聽力提升視頻素材之 網(wǎng)絡(luò)公開課

托福聽力中一半是課堂場景的還原，老師提供一個(gè)新的名詞或者圖片，邊向同學(xué)們解讀邊與大家互動。盡管使用英文進(jìn)行，整個(gè)模式其實(shí)與大家平時(shí)的課堂并無區(qū)別。但是這樣全英文的授課場景去哪里找呢?

各大高校的免費(fèi)網(wǎng)絡(luò)公開課給大家提供了這樣一個(gè)機(jī)會，無論老師的發(fā)音用詞還是具體的授課內(nèi)容，都能再現(xiàn)原汁原味的歐美課堂教學(xué)場景。而且全部資源都來自名師名校，內(nèi)容涵蓋數(shù)學(xué)、文學(xué)、工程、生物、歷史、經(jīng)濟(jì)、環(huán)境等等，正是大家滋潤自己興趣愛好的好時(shí)機(jī)。

因?yàn)楣_課一般較長，更多的是幫助考生熟悉全英課堂的氛圍，對于老師上課的用詞難度、語速、口音等等提前熟悉，從而在托福聽力考場上見招拆招。筆者就曾經(jīng)在國外留學(xué)過一年時(shí)間。臨走之前聽公開課還處在依賴字幕的階段，常常一個(gè)詞錯(cuò)過后面一整段都理解慢半拍;然而一年留學(xué)的摸爬滾打的確讓我有了極為明顯的進(jìn)步，無需開字幕就可以輕松理解，托福聽力也得到了滿分。身在國內(nèi)的各位考生也可以通過公開課和我有一樣的收獲。

2020托福聽力練習(xí)：能噴射甲烷的生物

The first life on Earth appeared about four billion years ago. One place these pioneering organisms may have emerged is at hydrothermal vents, deep underwater. Where unusual chemistry provided energy for primitive life-forms to survive. Life-forms like the methane-belching microbes found at the vents today.

Now, for the first time, researchers have found evidence of methane-producing life in similarly extreme conditions, but at the surface of the Earth — at a spring in northern California, called The Cedars. The water there is extremely basic — with a pH of 11.6. And it contains no oxygen. Not an easy place to survive.

Researchers tested water and sediment at the Cedars. Some samples got dosed with mercuric chloride to kill any life present. Those dosed samples produced no methane. But the samples in which microbes were allowed to survive did put out methane. Confirming that at least some of the methane at the springs is indeed biological in origin. The findings appear in the Journal of Geophysical Research: Biogeosciences.

The finding has implications for climate change alleviation. A geologically similar spring in Oman has been proposed as a site for carbon storage—pumping CO2 underground, where it gets incorporated in stone. But the extremophiles at The Cedars can use CO2 to make methane—an even more potent greenhouse gas. "So imagine pumping CO2 into the ground and having it come back up as methane." Penny Morrill, a biogeochemist at Memorial University of Newfoundland. "This will not necessarily happen, but it is something to be tested for before fully implementing a carbon capture and storage technology at one of these types of sites."

Morrill says the study's also a reminder that life is tenacious. "We should not let our biases prevent us from looking for evidence of life in what we would otherwise consider an unexpected place." Including other planets and moons.

地球上的第一個(gè)生命出現(xiàn)在約40億年以前。這些先驅(qū)生物出現(xiàn)的其中一個(gè)地方是深海熱泉和深海。那里不尋常的化學(xué)物質(zhì)為原始生命形態(tài)提供了生存下去的能量?，F(xiàn)在深海熱泉發(fā)現(xiàn)了能噴射甲烷的微生物。

研究人員首次發(fā)現(xiàn)了能產(chǎn)生甲烷的生物生活在類似極端環(huán)境的證據(jù)，而這個(gè)地方位于地球表面，那就是加利福尼亞州北部的雪松泉。這里的水很普通，酸堿值為11.6。但是水里沒有氧氣。這可不是一個(gè)容易生存的地方。

研究人員對雪松泉里的水和沉積物進(jìn)行了檢測。一些樣本里含有氯化汞，可以致死任何生命。這類樣本不能產(chǎn)生甲烷。而可以讓微生物生存的樣本會釋放出甲烷。這表明，至少該泉水里的一些甲烷的確是生物起源。這一發(fā)現(xiàn)刊登在《地球物理學(xué)研究雜志：生物地球科學(xué)》上。

這一研究對減緩氣候變化有啟示意義。安曼一處具有類似地質(zhì)的泉水被推薦作為碳儲存地，輸送被注入地下巖石儲存的二氧化碳。但是雪松泉的極端微生物可以利用二氧化碳制造甲烷，甲烷是一種更強(qiáng)的溫室氣體?！跋胂笠幌拢瑢⒍趸驾斔椭恋叵?，然后再把它變成甲烷。”紐芬蘭紀(jì)念大學(xué)的生物化學(xué)家佩妮·莫里爾表示，“這不一定會發(fā)生，但是這是在這類地方完全實(shí)現(xiàn)碳捕捉和儲存技術(shù)之前要進(jìn)行的測試?！?/p>

莫里爾表示，這項(xiàng)研究還提醒人們生命是頑強(qiáng)的。“我們不應(yīng)該因?yàn)槠姸Ｖ乖谝庀氩坏降牡胤綄ふ疑C據(jù)的腳步”。這些地方包括其他星球和月球。

重點(diǎn)講解：

1. for the first time 首次;第一次;

例句：For the first time luck hooked onto me.

運(yùn)氣第一次降臨到我頭上。

2. at least 至少，起碼;

例句：At least this second meeting had helped to thaw the atmosphere.

這第二次會議至少起到了緩和氣氛的作用。

3. prevent sb. from doing sth. 阻止;制止;阻礙;

例句：Cotton mittens will prevent the baby from scratching his own face.

棉的連指手套使嬰兒不會抓傷自己的臉。

4. look for 尋找，尋求，謀求(解決方案或新的方法);

例句：The working group will be looking for practical solutions to the problems faced by doctors.

工作小組將尋求切實(shí)可行的方案，以解決醫(yī)生們遇到的難題。

2020托福聽力練習(xí)：晚年開始健康飲食習(xí)慣

Let's say your diet has been not so great.

Maybe too much red meat, especially processed meat.

Maybe too many sugary soft drinks.

And maybe you've been eating like that for decades.

So what's the point of trying to make some healthful changes now, after the damage has presumably been done?

“It is impressive that changes even very late in life,such as even being older and having a heart attack, a dietary change can within a matter of a few months drop our risk greatly of a recurrent heart attack or death.”

Walter Willett. He chairs the Department of Nutrition at the Harvard T. H. Chan School of Public Health.

He spoke at a January 15th forum on Cancer and Diet that wound up touching on diet and health in general.

“So it's never too late to make important changes.

For diabetes also, if we change our diet almost immediately our risk of diabetes goes down.

But that's not to say you just should just wait till you're old to start living a healthy life.

We're seeing in some studies now that what women ate as adolescents, especially if they ate a lot more red meat, that affected breast cancer risk later in their life.

So it's definitely important if you want the healthiest overall life is to start a healthy lifestyle early.

But if you've sort of ignored things it's never too late to still get some benefit.”

The entire hour-long forum featuring Willett and other researchers discussing diet and health is archived on line.

Just google “Harvard public health forum”.

Let's say your diet has been not so great. 我們假設(shè)你的飲食習(xí)慣不是特別好的狀況。

Maybe too much red meat, especially processed meat. 也許攝取太多的紅肉，尤其是那些加工過的肉類。

Maybe too many sugary soft drinks. 也許還有很多含糖軟飲料。

And maybe you've been eating like that for decades. 可能幾十年來你一直都是這樣的飲食習(xí)慣。

So what's the point of trying to make some healthful changes now, after the damage has presumably been done? 因此既然無形中已經(jīng)養(yǎng)成這樣的壞習(xí)慣對身體造成傷害，那現(xiàn)在嘗試健康飲食的改變意義在哪里呢?

It is impressive that changes even very late in life, such as even being older and having a heart attack, 這樣的改變在進(jìn)入晚年后會產(chǎn)生重大的影響，比如隨著歲月流逝身體負(fù)擔(dān)越來越重并且有心臟病困擾，

a dietary change can within a matter of a few months drop our risk greatly of a recurrent heart attack or death. 改善飲食可以在數(shù)個(gè)月內(nèi)大大降低心臟病復(fù)發(fā)或死亡的風(fēng)險(xiǎn)。

Walter Willett. He chairs the Department of Nutrition at the Harvard T. H. Chan School of Public Health. 哈佛大學(xué)公共衛(wèi)生學(xué)院營養(yǎng)系主任沃爾特·維萊特說道。

He spoke at a January 15th forum on Cancer and Diet that wound up touching on diet and health in general. 在1月15日關(guān)注飲食與健康的癌癥與飲食 論壇上他這樣說道。

So it's never too late to make important changes.For diabetes also, if we change our diet almost immediately our risk of diabetes goes down. 因此亡羊補(bǔ)牢永遠(yuǎn)不晚。對于糖尿病而言也是如此，如果改變自己的飲食習(xí)慣，我們罹患糖尿病的風(fēng)險(xiǎn)會即刻降低。

But that's not to say you just should just wait till you're old to start living a healthy life. 但這并不表明你要等待老年后才要開始健康生活。

We're seeing in some studies now that what women ate as adolescents, especially if they ate a lot more red meat, that affected breast cancer risk later in their life. 通過一些研究，我們了解到一些女性在年輕時(shí)食用大量紅肉，到了晚年就會增加患乳腺癌的風(fēng)險(xiǎn)。

So it's definitely important if you want the healthiest overall life is to start a healthy lifestyle early. 因此如果你想要健康，盡早開始健康的生活方式是絕對重要的。

But if you've sort of ignored things it's never too late to still get some benefit. 但如果你經(jīng)常忽視，現(xiàn)在開始也不晚!

The entire hour-long forum featuring Willett and other researchers discussing diet and health is archived on line. 如想瀏覽維萊特和其他研究人員就飲食與健康方面的完整討論內(nèi)容，

Just google Harvard public health forum. 請?jiān)谒阉饕娈?dāng)中搜索關(guān)鍵字哈佛公共健康論壇即可。