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本听力材料来自于老托partb，partc，是公认实施有效的听写材料，对于上手托福时间不长的同学非常适合。我曾经一次短时间备考听力提高了7分也归功老托。希望大家和我一样一定要坚持下来噢。相信坚持学习的同学听力上都会有很大的飞跃！
Nopain, no gain.我们的安排是这样的，第一遍用听力软件精听材料（建议做单句听写，听写的时候不要偷看我给的挖空题），然后按照我给的挖空题填关键词，回复后即可看到听力原文和文章精解，我将把难点和易错点oneby one 分析给大家。
回复填空答案格式如下：1____2____3____...et.al.
Not long ago, some of you may have read about a team of mountain-climbing scientists who helped to ______ the ______ of the highest mountain in the world: Mt. Everest. Of course, the elevation of Mt. Everestwas determined many years ago, using traditional surveying methods. But these scientists wanted to make a more precise measurement using a new method that ______recent advances in technology. It's called the ______. The Global Positioning System uses 24 satellites that circle the Earth. Each of these satellites is constantly sending out signals. And each signal contains important information that can be used to determine the ______ , ______, and elevation of any pointon the Earth's surface. Well, in order to use this system to calculate Mt. Everest's elevation, scientists needed to put a special ______ on its ______ to receivesignals 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 handheld telephone, soclimbers were able to take a receiver to the top of Everest and, from there, to______ 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 was previously thought.
