谁应该攀登珠穆朗玛峰？

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ridge - n. a long area that is on top of the mountain

altitude - n. the height of something

confusion - n. the feeling that you have when you do not understand what is happening

zone - n. an area that is different from other area

profound - adj. very great

summit - n. the highest point of a mountain

double - v. to use two times as many

management - n. the process of controlling and dealing with something