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    11．More than l00，and possibly hundreds，of Antarctic icebergs are floating towards Now Zealand in a rare event which has prompted a shipping warning，officials said on Monday．
    An Australian Antarctic Division glaciologist，said that th9 ice chunks（块），spotted by satellite photography，had passed the Auckland Islands and were heading towards the main South Island，about 450 kilometers southeast of it．
        Scientist Neal Young said more than 100 icebergs，some measuring more than 200 meters across，were seen in just one cluster（串），indicating there could be hundreds more．He said they were the remains of a massive iceberg which split from the Antarctic as sea and air temperatures rise due to global warming．"All of these have come from a larger one that was probably 30 square kilometers in size when it left Antarctica，"Young told the reporter．"It's done a long circuit around Antarctica and now the bigger parts of it al e breaking up and producing smaller ones"
        He said large numbers of icebergs had not floated this close to New Zealand since 2006，when a number came within 25 kilometers of the coastline-the first such sighting since l931．"They're following the same tracks now up towards New．Zealand．Whether they make it up to the South Island or not is diffcu1t to tell，"Young said？
        Maritime New Zealand spokesman Ross Henderson said that New Zealand has already issued coastal navigation warnings for the area in the Southern Ocean Where the icebergs have been seen．The icebergs are smaller parts of the giant chunks seen off Australia's Macquarie Island this month，including one estimated at two kilometers and another twice the size of Beijing's"Bird's Nest"Olympic Stadium．
    Young earlier said he expected to see more icebergs in the area if the Earth's temperature continues to increase．"If the current trends in global warming were to continue I would anticipate（预见）seeing more icebergs and the large ice shelves breaking up，"he said．

    51．We call infer that Auckland Islands isB
    A．to the east of the South Island   
    B．to the south of the South Island
    C．to the north of the South Bland  
    D．to the west of the South Bland
    52．According to Neal YoungD
    A．these icebergs came from different areas in Antarctica
    B．these icebergs will completely be melted in a short time
    C．the biggest of the icebergs is 30 square kilometers in size
    D．the icebergs or ice chunks al e breaking up all the way
    53．From the text we learn thatC
    A．floating icebergs once reached the South Bland in history
    B．icebergs were over 25 kilometers from the South Bland in 2006
    C．these icebergs are floating along almost the same coulee
    D．floating icebergs were closest from the South Island in l 931
    54．How does the government deal with the matter？B
    A．Making good use of the icebergs．
    B．Sending out safe sailing warnings．
    C．Warning people to protect the environment•
    D．Noticing the icebergs by satellite photography．
    55．What is the main cause of icebergs floating north？A
    A．Global warming     
    B．The rising of sea level
    C．The ocean current． 
    D．The season wind．

    分析 本文主要介绍了全球变暖引发的环境问题．南极冰川因气温的回升而沿着相同的路径向新西兰漂移，政府已经向市民发出航行的警告．

    解答 51．B．细节理解题．根据开头第一句中 th9 ice chunks（块），spotted by satellite photography，had passed the Auckland Islands and were heading towards the main South Island，about 450 kilometers southeast of it．可知，奥克兰群岛（Auckland Islands）在（新西兰的） 南岛的南边；故选B．
    52．D．细节理解题．根据第三度中Young told the reporter．"It's done a long circuit around Antarctica and now the bigger parts of it al e breaking up and producing smaller ones"可知，南极冰山的沿途冰山在一直融化，所以选择D．
    53．C．细节理解题．根据第四段及其中一句．"They're following the same tracks now up towards New．Zealand．可知，大量的冰川几乎沿着相同的路径向新西兰漂移；故选C．
    54．B．细节理解题．根据第五段开头一句 Maritime New Zealand spokesman Ross Henderson said that New Zealand has already issued coastal navigation warnings for the area in the Southern Ocean Where the icebergs have been seen．可知，新西兰政府已经发出了因气候变暖导致冰川融化带来的潜在威胁以及航行的危险等警告信号；故选B．
    55．A．推理判断题．由第三段He said they were the remains of a massive iceberg which split from the Antarctic as sea and air temperatures rise due to global warming．"及文章末尾部分的描述可知，这一现象的出现主要是由于气候变暖所导致的；故选A．

    点评 考查学生的细节理解和推理判断能力．做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确选择．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，要根据文章事实进行合乎逻辑的推理判断．

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