48 According to the passage, which of the following statements is NOT true?
(A) Some Sherpas in Nepal are not working as porters.
(B) Because of their faith, Sherpas never climb Mount Everest.
(C) Sherpas are able to work well even at very high altitudes.
(D) More than one-third of those who die climbing Mount Everest are Sherpas.

The Sherpas雪巴人（喜馬拉雅山脈的一個部族，常受僱爲登山者當嚮導）were nomadic遊牧 people who first settled in Khumbu, Nepal. They are regarded as被看成是 elite菁英 mountaineers山地人 and experts in their local terrain地形.  

They were immeasurably不能测量 valuable to early explorers探險家 of the Himalayan region, serving as充當 guides at the extreme altitudes海拔 of the peaks and passes in the region, particularly for expeditions旅程, 遠征隊 to climb Mount Everest. After Edmund Hillary and Sherpa Tenzing Norgay successfully reached the summit of Mount Everestin 1953, the term “Sherpa雪巴人” became a term for a faithful忠誠 assistant助手, a porter搬運工, or a guide, regardless不管怎樣 of their ethnicity民族；種族.  

“Sherpa雪巴人” originally meant “people of the east.” The first Sherpa雪巴人 are believed to have walked from the eastern slopes斜坡 in the 16th century to reach the southern slopes斜坡 of Mount Everest. In the remote village of the Khumbu valley, the Sherpas雪巴人’ traditional home, they formed their own special culture. Following their religious faith, they never tried to climb until the steady stream小河 of “high peak climbers” from the West made mountain climbing a profitable有盈利 business. But the Sherpas雪巴人 pay a high price for their special skills. Sherpas雪巴人 account for（數量上）佔 more than one-third of the people who are killed on Mount Everest. However, most of the 70,000 or so Sherpas雪巴人 in Nepal are not involved in參與 mountain-climbing jobs. Some Sherpas雪巴人 still carry goods across the mountains for trade with people in Tibet. The sudden arrival of westerners has brought some of the comforts of modern life to the larger villages, so they might have telephone service and electricity. For the most part, the Sherpas雪巴人 have kept most of the traditional lifestyle. The arrival of Westerners has also made the Sherpas雪巴人 of Khumbu rich because the tourist economy produces more wealth. But is this better? The question from the principal最重要、校長 of a school reflected considerable concern about this: “If the trekkers(trekker 的復數) 背包客 do not come, where are the jobs?”