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A、Detailed maps from previous studies. B、Recent advances in technology. C、Plenty of funding for the study. D、Experience carrying
A、Detailed maps from previous studies. B、Recent advances in technology. C、Plenty of funding for the study. D、Experience carrying
admin
2013-06-03
47
问题
Not, long ago, some of you may have read about the team of mountain climbing scientists who helped to recalculate the elevation of the highest mountain in the world, Mount Everest. Of course the elevation of Mount Everest was determined many years ago using traditional surveying methods. But these scientists wanted to make a more pre else measurement, using a new method that takes advantage of recent advances in technology; it’s called the Global Positioning System. The Global Positioning System uses 24 satellites that circle the earth. Each of the satellites is constantly sending out signals, and each signal contains important information that can be used to determine the longitude, latitude and elevation at any point on the earth’s surface. Well in order to use the system to calculate a mount of Everest’s elevation, scientists need to put a special receiver on the summit to receive signals from the satellites. The problem with this was that in the past, the receivers were much too heavy for climbers to carry. But now these receivers have been reduced to about the size and weight of a hand held telephone, so climbers were able to take the receiver to the top of the Everest, and from there, to access the satellite system signals that would allow them to determine the precise elevation. And it turns out that the famous peak is actually a few feet higher than us previously thought.
选项
A、Detailed maps from previous studies.
B、Recent advances in technology.
C、Plenty of funding for the study.
D、Experience carrying heavy loads up mountains.
答案
B
解析
细节题。解答此题的关键是原文 (takes advantage of recent advances in technology)在选项中的再现(Recent advances in technology)。
转载请注明原文地址:https://jikaoti.com/ti/zw2FFFFM
0
大学英语四级
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