The local people of La Gomera can carry on conversations by whistling(吹口哨) from far away. For face-to-face conversations, they speak Spanish. But when they need to speak over a distance(距离), they whistle.
La Gomera is a small island. This island is almost shaped like a circle. It is very mountainous. Walking from one place to another may be a slow and difficult job. That is why whistling is so useful to the local people. A message can easily be whistled over a couple of miles, while to travel that same distance on foot might take an hour.
A good whistler can be heard and understood five miles away. His whistling can be farther away when it is windless. It is said that the record is about nine miles. Anyone who has heard a top whistler will agree that this record is quite possible.
A whistle travels farther than a shout, and is easier to understand. When a person shouts, he cannot pronounce his words well. But if a whistle is heard, it will be heard clearly.
Whistling is popular at La Gomera, and many methods of whistling are used …
49．How do people of La Gomera speak over a distance?
A．By shouting. B．By whistling. C．By travelling. D．By recording.
50．What can we know about La Gomera from Paragraph 2?
A．It is very mountainous. B．It lies between two circles.
C．It is easy to travel there. D．It is hard to find a job there.
51．What helps a whistle travel farther?
A．A windless day. B．A long distance.
C．A useful message. D．A clear pronunciation.
52．What will the writer talk about in the last paragraph?
A．Disadvantages of whistling. B．Stories of a top whistler.
C．Different methods of whistling. D．Examples of good whistlers.
文章大意：文章介绍了一个特殊的地方La Gomera，这里的人离得远的时候使用口哨语言彼此交流。
49．B【解析】细节理解题。根据第1段中“The local people of La Gomera can carry on conversations by whistling from far away. ”可知La Gomera的人们离得远时通过吹口哨交流。故选B。
50．A【解析】细节理解题。根据第2段中“It is very mountainous.”可知La Gomera是多山的。故选A。
51．A【解析】细节理解题。根据第3段中“His whistling can be farther away when it is windless.”可知在没有风的时候，哨声可以传得更远。所以无风的天有助于哨声的传播，故选A。
52．C【解析】推理判断题。根据最后一段中“many methods of whistling are used …”可推断最后一段将要谈论不同的吹口哨方法。故选C。