2012年12月大学英语六级真题及答案解析汇总_第10页

　Section C
　　Mountain climbing is becoming a popular sport, but it is also a potentially dangerous one. People can fall. They may also become ill. One of the most common dangers to climbers is altitude sickness, which can affect even very experienced climbers. Altitude sickness usually begins when a climber goes above 8,000 to 9,000 feet. The higher one climbs, the less oxygen there is in the air. When people don’t get enough oxygen, they often begin to gasp for air. They may also feel dizzy and light-headed. Besides these symptoms of altitude sickness, others such as headache and fatigue may also occur. At heights of over 18,000 feet, people may be climbing in a constant daze. Their state of mind can have adverse affect on their judgment. A few precautions can help most climbers avoid altitude sickness. The first is not to go too high, too fast. If you climb to 10,000 feet, stay at that height for a day or two. Your body needs to get used to a high altitude before you climb to a even higher one. Or if you do climb higher sooner, come back down to a lower height when you sleep. Also, drink plenty of liquids and avoid tobacco and alcohol. When you reach your top height, do like activities rather than sleep too much. You breathe less when you sleep, so you get less oxygen. The most important warning is this: if you have severe symptoms, then don’t go away, go down. Don’t risk injury or death because of over-confidence or lack of knowledge.
　　36. potentially
　　37. experienced
　　38. gasp
　　39. dizzy
　　40. fatigue
　　41. constant
　　42. adverse
　　43. precautions
　　44. Your body needs to get used to a high altitude before you climb to a even higher one.
　　45. When you reach your top height, do like activities rather than sleep too much.
　　46. Don’t risk injury or death because of over-confidence or lack of knowledge.
　　【点评】
　　本文是有关高原病的，主要讲述了高原病的症状以及预防措施。文章本身长难句不多，但出现了较多偏难单词，考验学生的临场心态。
　　需填单词难度较大，如dizzy，fatigue，adverse，altitude等，对学生的词汇量要求颇高。
　　空格整体分布较为均匀，填写时间比较充足。所填词语格式比较重要，如-s等是不可漏过的细节。需填写的句子均较短，难度不是特别大。