改革后的英語(yǔ)六級(jí)考試更注重語(yǔ)言的運(yùn)用能力，也更加側(cè)重聽力部分的實(shí)操技能。

在六級(jí)聽力講座部分一定要要重視首段的功效，因?yàn)槠渫c(diǎn)出一篇文章的主題，為這篇文章的走勢(shì)方向打下基調(diào)。當(dāng)是面對(duì)篇幅較長(zhǎng)、題材多樣、內(nèi)容豐富的六級(jí)的講座，只理解開篇或許能夠幫助大家拿到一部分分?jǐn)?shù)，要想取得更高分?jǐn)?shù)，那么就需要一些輔助的招數(shù)，教給大家一個(gè)被人們忽略卻非常重要的技巧——預(yù)測(cè)。

有不少同學(xué)把重點(diǎn)放在聽文章上，聽耳邊出現(xiàn)的每一個(gè)單詞，試圖將耳邊的音符譯成漢語(yǔ)，結(jié)果是不盡人意，后面的內(nèi)容很可能不知所云，內(nèi)心也是異常焦躁。其實(shí)，就像日常生活中我們同別人交流常常會(huì)考慮對(duì)方接下來(lái)會(huì)說(shuō)些什么一樣，我們?cè)谟⑽穆犃χ校诎盐瘴恼轮黝}，抓住段落中的關(guān)鍵詞和核心概念后，也應(yīng)該迅速激活自己在該話題領(lǐng)域的相關(guān)知識(shí)，對(duì)可能聽到的內(nèi)容進(jìn)行合理預(yù)測(cè)。能夠運(yùn)用預(yù)測(cè)的技巧合理推測(cè)后文內(nèi)容從而做到和作者的思想交流，對(duì)于我們掌握整篇文章起著事半功倍的效用，所以大家一定要重視預(yù)測(cè)這一聽力技巧。

現(xiàn)在我們來(lái)聽一篇六級(jí)聽力講座題：

Now listen to the following recording and answer questions 23 to 25

Now listen to the following recording and answer questions 23 to 25

23
A.The former is helpful while the latter is harmful.
B.The former can be avoided while the latter cannot.
C.The former causes more harm than the latter.
D.The former is natural while the latter is not.

24
A.Large areas of forests are felled.
B.The world population keeps increasing.
C.People create things that release extra heat.
D.There are too many cars that bum gas.

25
A.The polar ice caps and glaciers will melt.
B.More animals will have to find new habitats.
C.The price of gas will keep soaring.
D.There will be more earthquakes.

原文：

Many?people?may?not?realize?it,?but?the?greenhouseeffect?and?global?warming?are?totally?differentthings.?The?greenhouse?effect?is?something?thathappens?with?all?celestial?bodies?—?planets,?moons,and?suchthat?have?an?atmosphere.?Anyway,?backto?the?greenhouse?effect.?The?greenhouse?effect?isa?process?that?happens?when?the?sun's?heat?entersEarth's?atmosphere.?The?sun's?rays?warm?the?earth,?and?the?atmosphere?keeps?the?heat?in,just?like?a?greenhouse.?It's?a?very?natural?thing,?and?in?most?cases,?the?planet?system?knowshow?to?balance?itself?out.?Anyway,?like?I?said,?it's?a?pretty?natural?process.

Now?all?this?gets?messed?up?when?humans,?um,?add?stuff?to?Earth's?atmosphere.?That's?whenglobal?warming,?which?is?not?a?natural?process,?happens.?See,?what?happens?is?that?peoplecreate,?um,?things?that?create?extra?heat.?For?example,?cars.?We?drive?cars?all?the?time.?So?wedrive?our?cars,?and?our?cars?bum?gas,?and?this?exhaust?is?pretty?hot.?And?the?atmospherekeeps?this?heat?around?the?planet.?Plus,?all?of?our?machinery?and?our?factories?and?stuff,?theyall?produce?heat.?So?all?this?stuff?creates?what?scientists?are?calling?global?warming.?Earth'ssurface?and?atmosphere?just?keep?getting?hotter.

Now?global?warming?has?many?negative?effects,?but?I?think?one?of?the?biggest?problems?withglobal?warming?is?the?melting?of?polar?ice?caps?and?glaciers.?See,?our?planet?has?huge?chunksof?ice?at?both?of?its?poles.?And?when?global?warming?happens,?um,?the?overall?temperature?ofthe?planet?increases.?And?what?this?does?is?it?makes?polar?ice?melt.?So?when?ice?melts,?it?turnsinto?water,?which?goes?into?our?oceans.?And?that?causes?the?level?of?water?to?rise.?And?thiscould?also?cause?major?flooding.

問(wèn)題：

Question?23.?What's?the?difference?between?greenhouse?effect?and?global?warming?

Question?24.?According?to?the?speaker,?why?does?global?warming?happen?

Question?25.?What's?the?speaker's?biggest?concern?with?global?warming?

原文釋義：

很多人或許沒(méi)有意識(shí)到，但是溫室效應(yīng)和全球變暖是兩種完全不同的事。溫室效應(yīng)是所有有大氣層的天體都會(huì)出現(xiàn)的現(xiàn)象，比如行星、月球，等等。不管怎樣，繼續(xù)說(shuō)溫室效應(yīng)。當(dāng)太陽(yáng)的熱量進(jìn)入地球大氣層時(shí)，就會(huì)出現(xiàn)溫室效應(yīng)。太陽(yáng)光使地表暖和起來(lái)，而大氣層將熱量保存起來(lái)，就像個(gè)溫室一樣。溫室效應(yīng)是一個(gè)十分自然的過(guò)程，多數(shù)情況下，地球系統(tǒng)自有辦法保持平衡?？傊?，就像我說(shuō)的，它是一個(gè)很自然的過(guò)程。

當(dāng)人類在大氣中增加了很多物質(zhì)時(shí)，所有的這一切就變?cè)愀饬?。那時(shí)候就會(huì)出現(xiàn)很不自然的過(guò)程——全球變暖。全球變暖是由于人們制造了很多排放多余熱量的事物。比如，汽車。我們一直都在開車。我們開車，車會(huì)產(chǎn)生氣體，而這些氣體溫度較高。大氣層將這些熱量保存在地球周圍。另外，我們的機(jī)器、工廠等等，都會(huì)產(chǎn)生熱量。所有這些東西就造成了科學(xué)家所說(shuō)的全球變暖。地球表面和大氣層都變得越來(lái)越暖。

現(xiàn)在全球變暖有很多負(fù)面影響，但是我覺(jué)得全球變暖最大的問(wèn)題之一就是極地冰蓋和冰川的融化。我們的地球在兩極地區(qū)都有大量的冰川覆蓋。出現(xiàn)全球變暖以后，地球的整體溫度上升。這帶來(lái)的影響就是極地冰雪融化。那么冰雪融化時(shí)，就會(huì)變成水，流入海洋。這會(huì)使海平面上升。也會(huì)造成嚴(yán)重洪災(zāi)。

問(wèn)題釋義：

問(wèn)題23 溫室效應(yīng)和全球變暖的區(qū)別是什么？

問(wèn)題24 根據(jù)發(fā)言人，為什么會(huì)出現(xiàn)全球變暖？

問(wèn)題25 發(fā)言人對(duì)全球變暖最大的擔(dān)憂是什么？

參考答案：

【小題23】D
【小題24】C
【小題25】A

習(xí)題解析：

【小題23】聽力原文在對(duì)溫室效應(yīng)進(jìn)行解釋說(shuō)明之后總結(jié)說(shuō)Anyway, like I said, it's a pretty natural process. 指出溫室效應(yīng)是一個(gè)十分自然的過(guò)程。隨后說(shuō)到人類在大氣中增加了很多物質(zhì)時(shí)，所有的這一切就變?cè)愀饬?，并緊接著提到That's when global warming, which is not a natural process, happens.由此可見，全球變暖不是自然過(guò)程，而是人類使然，因此D項(xiàng)表述正確，故選D。

【小題24】聽力原文中在說(shuō)到全球變暖并非自然過(guò)程之后，提到See, what happens is that people create, um, things that create extra heat.由此可知，全球變暖是由于人們制造了很多排放多余熱量的事物，故選C。A、B兩項(xiàng)在聽力原文中并未提及，D項(xiàng)中提到了消耗汽油的汽車，但這只是造成全球變暖的一個(gè)因素，并不能概括所有因素，故排除。

【小題25】聽力原文中提到Now global warming has many negative effects, but I think one of the biggest problems with global warming is the melting of polar ice caps and glaciers.指出在演講者看來(lái)，全球變暖的最大問(wèn)題在于極地冰雪融化，因而A項(xiàng)表述正確，故選A。其他幾項(xiàng)在聽力原文中并未提及，均排除。