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Where do you keep ice? In die freezer, o...

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, for example? 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 10 meters 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.

1.What makes Antarctica a safe place to store ice?

A. Its large mountains.

B. Its function as a freezer.

C. The abundant ice samples there.

D. The absence of global warming.

2.Jerome compares ice with rocks and tree rings to state that_      .

A. it's necessary to store ice

B. it’s more valuable to study ice

C. ice disappears very quickly

D. ice should be stored at home

3.What is the researchers' purpose of studying ice?

A. To learn about climate.

B. To learn about the Alps.

C. To trap air bubbles.

D. To reduce carbon dioxide.

4.What do scientists think of storing ice in Antarctica?

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.

 

1.B 2.A 3.A 4.D 【解析】 试题分析:本文属于科普说明文阅读,科学家想方设法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。文章中介绍了科学家要储存冰块的原因和目的。 1.B 推理判断题。根据第一段最后一句They’ve decided to store ice in Antarctica because global warming is causing some of the glaciers in places like the Alps to melt.可知因为全球变暖是,世界其他地方的冰都在融化,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B正确。 2.A 推理判断题。根据第三段三、四、五句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.可知这些都是人们储存冰的原因,研究冰块,我们可以了解很多过去的事情,并预测未来的事情。所以文章中提到这些例子是为了说明储存冰块的必要性。故A正确。 3.A 细节理解题。根据第三段三、四句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.可知研究冰块可以让我们了解很多与气候有关的信息。故A正确。 4. 【名师点睛】 科普类文章成了英语中考阅读理解中必不可少的题材,考查内容主要以介绍科学现象为主。 ★ 文体特征 1. 结构严谨,逻辑性强。科普类文章属于接四类说明文,一般由导语(introduction)、背景(background)、主体(main body)和结尾(end)四部分构成,在句首和句尾常出现主题句。这类文章通常有明确的主题,并且论证主题的事实逻辑结构严谨,层次分明,段落清晰。 2. 从词汇角度来看,在科普类文中,词汇的意义比较单一、稳定、简明,不带感情色彩,具有单一性和准确性的特点。由于科普类文章读者对象是大众,所以语言上力求浅显易懂,用通俗的语言解释某种科学现象和科学道理,但其中有些词汇仍带有很强的术语性的烙印。但通过上下文解释考生可以推定词义,从而顺利解题。因此,科普类文章中尽管有专业词汇和术语,但可以通过上下文、构词法等来理解题目,猜出题意。 3. 从语法和句子结构方面看,句子结构较复杂,长难句较多,语法分析较困难,为了描述一个客观事实,严密地表达自己的思想,作者经常会使用及多种语法现象与一体的长句。常用被动语态、定语从句等。 ★ 解题技巧: 1、学生需先通读短文,把握文章大意,了解该短文是解释何种科学现象或科学道理的,抓住体现本文主题的关键词和关键句,提高阅读速度。 2、要做好科普类文章试题,考生还要掌握这类文章的特点和结构,真正读懂并理解它。在阅读这类文章时要遵循此类文章的一般结构:导语、背景、主体和结尾。阅读时要注意开头和结尾,往往可以归纳出文中的中心思想。 3、在了解全文大意和结构的基础上,学会解决what/how/why等一类的问题,他们是文章的关键,如果能够带着这些问题去阅读,则会更迅速地抓住文章的主题。 另外,还要通过读书看报等多普及科普知识,比如:太空与海洋、环境与污染、科技与创造发明、医疗卫生,动物世界等。这样长期坚持,既开阔了视野又能正确迅速地做好此类题。 考点:考查科普说明文阅读
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