2. 考研
  3. Today we live in a world where GPS systems, digital maps, and other navigation apps are available on our smart phones.【B1】______

Today we live in a world where GPS systems, digital maps, and other navigation apps are available on our smart phones.【B1】______

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问题    Today we live in a world where GPS systems, digital maps, and other navigation apps are available on our smart phones.【B1】______of us just walk straight into the woods without a phone. But phones【B2】______on batteries, and batteries can die faster than we realize.【B3】______you get lost without a phone or a compass, and you【B4】______can’t find north, a few tricks to help you navigate【B5】______to civilization, one of which is to follow the land.
   When you find yourself well【B6】______a trail, but not in a completely【B7】______area, you have to answer two questions: Which【B8】______is downhill, in this particular area? And where is the nearest water source? Humans overwhelmingly live in valleys, and on supplies of fresh water.【B9】______, if you head downhill, and follow any H2O you find, you should【B10】______see signs of people.
   If you’ve explored the area before, keep an eye out for familiar sights—you may be【B11】______how quickly identifying a distinctive rock or tree can restore your bearings.
   Another【B12】______: Climb high and look for signs of human habitation.【B13】______, even in dense forest, you should be able to【B14】______gaps in the tree line due to roads, train tracks, and other paths people carve【B15】______the woods. Head toward these【B16】______to find a way out. At night scan the horizon for【B17】______light sources, such as fires and streetlights, then walk toward the glow of light pollution.
  【B18】______, assuming you’re lost in an area humans tend to frequent, look for the【B19】______we leave on the landscape. Trail blazes, tire tracks, and other features can【B20】______you to civilization.
【B17】
选项 A、artificial
B、mysterious
C、hidden
D、limited
答案A
解析 本题所在句子“scan…for 17 light sources”，与本段开头“look for sign of human habitation”结构一致，语义相关，空格处所填的形容词和human意思相近，选择artificial“人造的”。除此之外，17题后面所列举的两种光源的共同特点就是artificial“人工的，人造的”。故选A。
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考研英语一

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