[解析]
(1)推理判断题。根据第二段"It really makes us question,is our presence really needed?" says Alia Khan,one of the authors of the new study. "We have quite a large black carbon footprint in Antarctica,which is enhancing snow and ice melt."("这真的让我们怀疑,我们的存在真的有必要吗?这项新研究的作者之一Alia Khan说。"我们在南极洲有相当大的黑碳足迹,这正在加速冰雪融化。")可知,根据Alia Khan的疑问可以看出他对人们去南极洲考察这一事实表示怀疑,而且他看到了人们到访南极洲产生的碳足迹使南极洲的冰雪融化,这让他感到焦虑。故选C。
(2)细节理解题。根据第三段中的Soot in Antarctica comes primarily from waste gases of cruise ships (游轮),vehicles and airplanes,although some pollution travels on the wind from other parts of the globe.(南极洲的烟尘主要来自游轮、车辆和飞机的废气,尽管一些污染是从世界其他地区随风传播的。)可知,南极洲煤烟的主要来源就是人们所使用的交通工具。故选B。
(3)推理判断题。根据第四段中的When snow and ice are uncovered,they reflect an enormous amount of sunlight before it can turn into heat. "These are the mirrors on our planet," says Sonia Nagorski,a scientist at the University of Alaska Southeast.(当雪和冰被揭开时,它们会在阳光变成热量之前反射大量的阳光。"这些是我们星球上的镜子,"阿拉斯加东南大学的科学家索尼娅•纳戈尔斯基(Sonia Nagorski)说。)可推断出冰雪被煤烟覆盖后,其反射阳光的效果就会降低。故选A。
(4)标题归纳题。根据第一段Soot (煤) pollution is speeding up climate﹣driven melting in Antarctica,a new study suggests,raising questions about how to protect the delicate continent from the increasing number of humans who want to visit.(一项新的研究表明,煤烟污染正在加速南极洲的气候融化,这引发了人们对如何保护这片脆弱的大陆免受越来越多的想要到访那里的人的影响的问题。)可知,人们在去南极洲考察的同时,却破坏了南极洲的生态环境,因此D项Are we welcome to the South Pole?(欢迎我们到南极来吗?)概括文意,可以作为本文标题,故选D。