Today, we live in a world where GPS systems, digital maps, and other navigation apps are available on our smart phones. (1)_____of us just walk straight into the woods without a phone. But phones (2)_____ on batteries, and batteries can die faster than we realize. (3)_____ you get lost without a phone or a compass, and you (4)_____ can’t find north, we have a few tricks to help you navigate (5)_____ to civilization, one of which is to follow the land.

　　When you find yourself well (6)_____ a trail, but not in a completely (7)_____ area, you have to answer two questions: Which (8)_____ is downhill, in this particular area? And where is the nearest water source? Humans overwhelmingly live in valleys, and on supplies of fresh water. (9)_____ , if you head downhill, and follow any H₂O you find, you should (10)_____ see signs of people.

　　If you’ve explored the area before, keep an eye out for familiar sights—you may be (11)_____ how quickly identifying a distinctive rock or tree can restore your bearings.

　　Another (12)_____ : Climb high and look for signs of human habitation. (13)_____ , even in dense forest, you should be able to (14)_____ gaps in the tree line due to roads, train tracks, and other paths people carve (15)_____ the woods. Head toward these (16)_____ to find a way out. At night, scan the horizon for (17)_____ light sources, such as fires and streetlights, then walk toward the glow of light pollution.

　　 (18)_____ , assuming you’re lost in an area humans tend to frequent, look for the (19)_____ we leave on the landscape. Trail blazes, tire tracks, and other features can (20)_____ you to civilization.

答案精析：本题考查paths people carve和the woods之间的关系，paths后面为宾语从句，正常语序为people carve paths _______ the woods。按常理可知，路应该是穿过森林开凿出来的，因此选through，答案为B。

错项排除：路无法“从”（from）森林凿出，也无法在森林之“外”（beyond）或之“下”(under)凿出，A、C、D错误。

长难句分析：For example, even in dense forest, you should be able to spot gaps in the tree line due to roads, train tracks, and other paths people carve through the woods.

此句中，due to引出造成后果的原因，在句中作定语。other paths后接定语从句，对此进行修饰，正常语序为：people carve paths through the woods。

句意为：比如，即使在茂密的森林里，你应该也能发现由于道路、火车轨道和人们在树林中开辟的其他道路而造成的树木之间的空隙。