7.Where do you keep ice?In the 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,for example?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℃.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 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.
33.Jerome compares ice with rocks and tree rings to state thatA.
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
34.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.
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 本文屬于科普說明文閱讀,科學(xué)家想方設(shè)法保存地球上存在的冰塊,并計(jì)劃在南極洲建立一個地下室儲存冰塊.文章中介紹了科學(xué)家要儲存冰塊的原因和目的.

解答 32-35 BAAD
32.B.推理判斷題.根據(jù)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?yàn)槿蜃兣,世界其他地方的冰都在融化,科學(xué)家把南極洲用來儲存冰塊,就是把它當(dāng)成冰箱在使用.故B正確.
33.A.推理判斷題.根據(jù)第三段三、四、五句Trapped air bubbles (氣泡) contain samples of the atmospherethat existed when that ice was formed.Ice is a record of climate By examining ice.we know carbondioxide in the atmosphere is higher now than in the last three million years.可知這些都是人們儲存冰的原因,研究冰塊,我們可以了解很多過去的事情,并預(yù)測未來的事情.所以文章中提到這些例子是為了說明儲存冰塊的必要性.故A正確.
34.A.細(xì)節(jié)理解題.根據(jù)第三段三、四句Trapped air bubbles (氣泡) contain samples of the atmosphere thatexisted when that ice was formed.Ice is a record of climate By examining ice.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A正確.
35.D.推理判斷題.根據(jù)第一段: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(xué)家認(rèn)為在南極洲儲存冰是一個可靠的辦法;故選D.

點(diǎn)評 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.

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B.we can buy products with a credit card as well as in cash
C.there are many online stores for us to visit on the Internet
D.online shopping is very convenient
59.The underlined sentence"Any kind of information on any topic under the sun is available on the Internet."means that on the InternetD
A.we can get information about things that have happened under the sun
B.we can't get information about things that have happened indoors
C.we can get information only about things that have happened in the daytime
D.we can get any information about anything that has ever happened anywhere
60.Which of the following things can NOT be done free on the Internet?D
A.Sending e-mails to friends.
B.Listening to old songs.
C.Searching for information
D.Downloading any software you want to your computer.

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