19．Where do you keep ice？In die freezer，of course．That's what scientists might have thought when they were looking for a safe place to store ice from mountain glaciers from around the world．They've decided to store ice in Antarctica because global warming is causing some of the glaciers in places like the Alps to melt．
Jerome Chappellaz of the French National Centre for Scientific Research is involved in creating an ice vault （地下室）there．He says："We are probably the only scientific community whose sample （樣本） is in danger of disappearing from the face of the planet．If you work on rocks or on tree rings，the raw material is still here and will be for many centuries．"
And why do scientists need to study ice from the Alps？Ice formed on the top of a mountain is made of snow accumulated over thousands of years．Trapped air bubbles （氣泡） contain samples of the atmosphere that existed when that ice was formed．Ice is a record of climate．By examining ice，we know carbon dioxide in the atmosphere is higher now than in the last three million years．Researchers use this kind of data to build computer models and try to predict what might happen in the future．
The ice vault will be housed in a snow cave at the Concordia Research Station，which is operated by scientists from France and Italy．The ice samples will be sealed in bags and placed 10meters below the surface at a constant temperature of-50*C．This will put the scientists'minds at rest．Losing the ice samples would be a disaster，and nobody wants to see a mine of scientific knowledge lost forever in a giant pool．
32．What is the researchers'purpose of studying ice？A
A．To learn about climate．
B．To learn about the Alps．
C．To trap air bubbles．
D．To reduce carbon dioxide．
33．Jerome compares ice with rocks and tree rings to state thatD．
A．ice should be stored at home
B．it's more valuable to study ice
C．ice disappears very quickly
D．it's necessary to store ice
34．What makes Antarctica a safe place to store ice？B
A．Its large mountains．
B．Its function as a freezer．
C．The abundant ice samples there．
D．The absence of global warming．
35．What do scientists think of storing ice in Antarctica？D
A．They consider it an easy job．
B．They're not optimistic about it．
C．They think it will cause disasters．
D．They think it's a reliable way．
分析 本文是一篇科教類閱讀．文章主要講述了科學家想方設(shè)法的保存地球上存在的冰塊，并計劃在南極洲建立一個地下室儲存冰塊．文章簡單介紹了科學家要儲存冰塊的原因和目的．
解答 32-35ADBD
32．A．細節(jié)理解題．根據(jù)"By examining ice，we know carbon dioxide in the atmosphere is higher now than in the last three million years．Researchers use this kind of data to build computer models and try to predict what might happen in the future．"可知研究冰塊可以讓我們了解很多與氣候有關(guān)的信息．故選A．
33．D．推理判斷題．根據(jù)"Trapped air bubbles （氣泡） contain samples of the atmosphere that existed when that ice was formed．Ice is a record of climate．By examining ice，we know carbon dioxide in the atmosphere is higher now than in the last three million years．"可知儲存冰塊是非常有必要的．故選D．
34．B．推理判斷題．根據(jù)"They've decided to store ice in Antarctica because global warming is causing some of the glaciers in places like the Alps to melt．"可知科學家把南極洲用來儲存冰塊就是把它當成冰箱在使用．故選B．
35．D．推理判斷題．根據(jù)"They've decided to store ice in Antarctica because global warming is causing some of the glaciers in places like the Alps to melt．"可知科學家認為在南極洲儲存冰塊是一個可靠的辦法．故選D．
點評 本文是一篇科教類閱讀．文章主要講述了科學家想方設(shè)法的保存地球上存在的冰塊，并計劃在南極洲建立一個地下室儲存冰塊．此類題型主要考查學生的細節(jié)理解和推理判斷能力．細節(jié)理解題是針對文中某個細節(jié)、某句話或某部分具體內(nèi)容設(shè)置問題，所以在做細節(jié)理解題時要結(jié)合原文和提干有針對性的找出相關(guān)語句進行仔細分析，再結(jié)合選項選出正確答案．在做推理判斷題時不要以個人的主觀想象代替文章的事實，要聯(lián)系上下文根據(jù)文章事實進行合乎邏輯的推理判斷．
