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The world’s greatest snow-capped peaks, which run in a chain from the Himalay

游客2023-12-26  66
问题    The world’s greatest snow-capped peaks, which run in a chain from the Himalayas to the Tianshan Mountains on the border of China and Kyrgyzstan, have lost no ice over the last decade, new research shows.
   The discovery has【C1】______ scientists, who had believed that around 50 billion tons of melted water were being shed each year and not being replaced by new snowfall.
   The study is the first to survey all the world’s icecaps and glaciers and was made 【C2】______ by the use of satellite data. Overall, the【C3】______ of melting ice outside the two largest caps — Greenland and Antarctica — is much【C4】______ than previously estimated, with the lack of【C5】______ loss in the Himalayas and the other high【C6】______ of Asia responsible for most of the discrepancy.
   Bristol University glaciologist Professor Jonathan Bamber said, "The very unexpected result was the【C7】______ mass loss from high mountains of Asia, which is not【C8】______ different from zero."
   The melting of Himalayan glaciers caused【C9】______ in 2009 when a report from the UN’s Intergovernmental Panel on Climate Change mistakenly stated that they would disappear by 2035, instead of 2350.【C10】______, the scientist who led the new work is clear that while greater uncertainty has been discovered in Asia’s highest mountains, the melting of icecaps and glaciers around the world【C11】______ a serious concern.
   "Our results and those of everyone else show we are【C12】______ a huge amount of water into the oceans every year," said Professor John Wahr of the University of Colorado. His team’s study concludes【C13】______ 443 to 629 billion tons of melted water overall are added to the world’s oceans each year. This is【C14】______ sea level by about 1.5 mm a year, the【C15】______ reports, in addition to the 2 mm a year caused by【C16】______ of the warming ocean.
   The scientists are【C17】______to point out that lower-altitude glaciers in the Asian mountain ranges are【C18】______ melting. Satellite images and reports【C19】______ this. But over the study period from 2003 to 2010, enough ice was added to the peaks to 【C20】______. [br] 【C10】
选项 A、Moreover
B、However
C、Besides
D、Therefore
答案 B
解析 本题考查逻辑衔接。由上文“喜马拉雅冰山何时会融化曾引起过争议”和下文“科学家们清楚地知道，不管亚洲山脉情况如何，全球冰山冰川融化仍是严重问题”，可知此处逻辑衔接为转折关系。词义辨析：moreover conj．意为“此外”；however conj．意为“然而，但是”；besides conj．意为“除……之外，还……”；therefore conj．意为“因此，所以”。根据逻辑衔接，选择however最为恰当。
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