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 （样本） 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 （气泡） 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 本文是一篇科教类阅读．文章主要讲述了科学家想方设法的保存地球上存在的冰块，并计划在南极洲建立一个地下室储存冰块．文章简单介绍了科学家要储存冰块的原因和目的．
解答 32-35ADBD
32．A．细节理解题．根据"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．"可知研究冰块可以让我们了解很多与气候有关的信息．故选A．
33．D．推理判断题．根据"Trapped air bubbles （气泡） 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．"可知储存冰块是非常有必要的．故选D．
34．B．推理判断题．根据"They've decided to store ice in Antarctica because global warming is causing some of the glaciers in places like the Alps to melt．"可知科学家把南极洲用来储存冰块就是把它当成冰箱在使用．故选B．
35．D．推理判断题．根据"They've decided to store ice in Antarctica because global warming is causing some of the glaciers in places like the Alps to melt．"可知科学家认为在南极洲储存冰块是一个可靠的办法．故选D．
点评 本文是一篇科教类阅读．文章主要讲述了科学家想方设法的保存地球上存在的冰块，并计划在南极洲建立一个地下室储存冰块．此类题型主要考查学生的细节理解和推理判断能力．细节理解题是针对文中某个细节、某句话或某部分具体内容设置问题，所以在做细节理解题时要结合原文和提干有针对性的找出相关语句进行仔细分析，再结合选项选出正确答案．在做推理判断题时不要以个人的主观想象代替文章的事实，要联系上下文根据文章事实进行合乎逻辑的推理判断．
