全球變暖之-全球變暖概述1（雙語(yǔ)）
　　聲明：本文圖片內(nèi)容來(lái)自與互聯(lián)網(wǎng)絡(luò)，旨在調(diào)節(jié)視覺(jué)疲勞，如" />

制服一区字幕精品|一二三区欧洲视频|国产无遮挡裸体女|好吊色91青青草|色欲TV亚洲国产|私人高清强伦中文字幕|国产在线自慰欧美综合图区|色欲av成人一区二区三区在线观看|九九九久久精品亚洲视频久久精品|亚洲无码中文在线

 新托�？荚嚲W(wǎng)
 考試資訊  報(bào)考指南  備考寶典  考場(chǎng)經(jīng)驗(yàn)  閱讀輔導(dǎo)  真題  模擬題   學(xué)友圈   精品網(wǎng)校課程
   聽(tīng)力 | 寫作 | 閱讀 | 口試   北京新航道托福精品課程   環(huán)球雅思托福熱門課程   新東方托福網(wǎng)絡(luò)課程   啟德托福   托�？荚嚧鹨蓞^(qū)

全球變暖百科詳述：全球變暖概述(1)

作者：不詳 　 發(fā)布時(shí)間：2009-12-29 16:00:43　 來(lái)源：網(wǎng)絡(luò)
  • 文章正文
  • 網(wǎng)校課程
  • 資料下載
  • 熱門話題
  • 論壇
　　KEYWORDS：全球變暖
　　全球變暖之-全球變暖概述1（雙語(yǔ)）
　　聲明：本文圖片內(nèi)容來(lái)自與互聯(lián)網(wǎng)絡(luò)，旨在調(diào)節(jié)視覺(jué)疲勞，如有版權(quán)問(wèn)題，請(qǐng)致電告知。本文英文閱讀文本內(nèi)容來(lái)自于國(guó)外英文門戶以及資訊資料網(wǎng)站，可能有超語(yǔ)法類的常用正確表達(dá)，請(qǐng)大家仔細(xì)審閱，注意甄別。
　　全球變暖指的是在一段時(shí)間中，地球的大氣和海洋溫度上升的現(xiàn)象，主要是指人為因素造成的溫度上升。原因很可能是由于溫室氣體排放過(guò)多造成。
　　Global warming is the increase in the average temperature of the Earth’s near-surface air and oceans since the mid-20th century and its projected continuation. Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) between the start and the end of the 20th century.
　　The Intergovernmental Panel on Climate Change (IPCC) concludes that most of the observed temperature increase since the middle of the 20th century was caused by increasing concentrations of greenhouse gases resulting from human activity such as fossil fuel burning and deforestation.The IPCC also concludes that variations in natural phenomena such as solar radiation and volcanism produced most of the warming from pre-industrial times to 1950 and had a small cooling effect afterward.These basic conclusions have been endorsed by more than 40 scientific societies and academies of science,including all of the national academies of science of the major industrialized countries.
　　Climate model projections summarized in the latest IPCC report indicate that the global surface temperature will probably rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the twenty-first century.The uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions.
　　Some other uncertainties include how warming and related changes will vary from region to region around the globe. Most studies focus on the period up to the year 2100. However, warming is expected to continue beyond 2100 even if emissions stop, because of the large heat capacity of the oceans and the long lifetime of carbon dioxide in the atmosphere.
熱門資料下載：
新托�？荚囌搲療豳N:
【責(zé)任編輯：育路編輯  糾錯(cuò)】
新托福培訓(xùn)咨詢電話：010-51294614
報(bào)考直通車
  
·新托福最近考試時(shí)間：2010年6月26日。
·考試內(nèi)容：閱讀、 聽(tīng)力、口語(yǔ)、寫作。
課程推薦
                    
　新托�？荚囕o導(dǎo)