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  3. 资料：A high-precision NASA radar instrumen

资料：A high-precision NASA radar instrumen

资格题库2022-08-02  15
问题 资料：A high-precision NASA radar instrument left a NASA airport in Southern California for Iceland on January 28 to create detailed maps of how glaciers move in the dead of winter. This will help scientists around the world better understand some of the most basic processes involved in melting glaciers, which are major contributors to rising sea levels.NASA used the same airborne instrument in June 2012 to map the summer flows of two Icelandic ice caps. The ice caps — large areas of permanent snow and ice cover — encompass multiple glaciers flowing in different directions and at different speeds. By mapping the same ice caps now, in winter, when the surface remains frozen all day, and then comparing the winter and summer velocities, the researchers will be able to isolate the effects of  melt water.Above is a view of a small part of the Hofsjkull ice cap, which encompasses several glaciers. The fan at upper left is part of a glacier called Mlaj?kull.For more on the research, see this NASA press release.What is the mission of the NASA radar instrument?A.To investigate the climate change.B.To make maps about moving glaciers.C.To measure the rising sea levels.D.To slow the melting process of glaciers
选项 A.To investigate the climate change.
B.To make maps about moving glaciers.
C.To measure the rising sea levels.
D.To slow the melting process of glaciers
答案 B
解析 本题考查的是细节理解。
【关键词】mission; NASA radar instrument
【主题句】第1自然段A high-precision NASA radar instrument left a NASA airport in Southern California for Iceland on January 28 to create detailed maps of how glaciers move in the dead of winter. This will help scientists around the world better understand some of the most basic processes involved in melting glaciers, which are major contributors to rising sea levels. 1月28日，美国宇航局的一架高精度雷达仪器离开美国加利福尼亚州南部的美国航空航天局（NASA）机场前往冰岛，绘制冰川在隆冬时节移动的详细地图。这将有助于世界各地的科学家更好地了解冰川融化所涉及的一些最基本的过程，这些冰川是海平面上升的主要因素。
【解析】本题的问题是“美国航空航天局雷达仪器的使命是什么？”。选项A意为“调查气候变化”；选项B意为“制作有关移动冰川的地图”；选项C意为“测量海平面上升”；选项D意为“减缓冰川的融化过程”。根据主题句可知，美国航空航天局雷达仪器的使命是绘制移动冰川的地图，故选B。
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