英语阅读翻译,53A,接纳人工翻译,在线等,急

题目

英语阅读翻译,53A,接纳人工翻译,在线等,急
The people of La Gomera（拉戈梅拉岛）can carry on long－distance conversation by whistling. For ordinary conversation they speak Spanish. But when they need to speak over a distance, and ordinary speech is impossible, they use sibo, which is the name of whistled form of speech.
La Gomera is very mountainous. In spite of the island’s small size, walking from one place to another may be a slow and difficult job. That message can easily be whistled over a couple of miles, while to travel the same distance on foot might take an hour.
A good whistler can be heard and understood five miles away. His whistling can be heard father away when there is little or no wind. I was informed that the record is about nine miles. Anyone who has heard a first－class whistler will agree that this figure is quite possible.
A whistle doesn’t have all the changes of tone. To achieve changes, the whistler tries to perform the same movement with his teeth, mouth, tongue and throat

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