The discovery of the Antarctic not only proved one of the most interesting of all geographical adventures, but created what might be called the heroic age of Antarctic exploration。 By their tremendous heroism, men such as Shakleton, Scott, and Amundsen caused a new continent to emerge from the shadows, and yet that heroic age, little more than a century old, is already passing. Modern science and inventions are revolutionizing the endurance, future journeys into these icy wastes will probably depend on motor vehicles equipped with caterpillar traction rather than on the dogs that earlier discoverers found so invaluable and hardly comparable.
Few realize that this Antarctic continent is almost equal in size to South America, and enormous field of work awaits geographers and prospectors. The coasts of this continent remain to be accurately charted, and the maping of the whole of the interior presents a formidable task to the cartographers who undertake the work. Once their labors are completed, it will be possible to prospect the vast natural resources which scientists believe will furnish one of the largest treasure hoards of metals and minerals the world has yet known, and almost inexhaustible sources of copper, coal, uranium, and many other ores will become available to man. Such discoveries will usher in an era of practical exploitation of the Antarctic wastes.
The polar darkness which hides this continent for the six winter months will be defeated by huge batteries of light, and make possible the establishing of air-fields for the future inter-continental air services by making these areas as light as day. Present flying routes will be completely changed, for the Antarctic refueling bases will make flights from Australia to South America comparatively easy over the 5,000 miles journey.
The climate is not likely to offer an insuperable problem, for the explorer Admiral Byrd has shown that the climate is possible even for men completely untrained for expeditions into those frozen wastes. Some of his parties were men who had never seen snow before, and yet he records that they survived the rigors of the Antarctic climate comfortably, so that, provided that the appropriate installations are made, we may assume that human beings from all countries could live there safely. Byrd even affirms that it is probably the most healthy climate in the world, for the intense cold of thousands of years has sterilize this continent, and rendered it absolutely germfree, with the consequences that ordinary and extraordinary sickness and diseases from which man suffers in other zones with different climates are here utterly unknown. There exist no problems of conservation and preservation of food supplies, for the latter keep indefinitely without any signs of deterioration; it may even be that later generations will come to regard the Antarctic as the natural storehouse for the whole world.
Plans are already on foot to set up permanent bases on the shores of this continent, and what so few years ago was regarded as a dead continent now promises to be a most active center of human life and endeavor.
1.When did man begin to explore the Antarctic?
A.About 100years ago.
B.In this century.
C.At the beginning of the 19th century.
D.In 1798.
雅思考试作文抢分秘笈常用句套及细节词汇
从雅思口语世界倒数第一看中国学习考试模式
雅思写作命题新变化及高分需注意的四大要点
写作并非高不可攀短期提高雅思写作有捷径
雅思范文应先支边还是自由工作
雅思写作本身无任何实质性变化
雅思考试趋势剖析
明年北京地区雅思可能因场次减少而报考紧张
雅思考官Clark谈雅思考试角色问题及备考建议
雅思改革意味着相对稳定的考试进入了动荡期
雅思首次公布评分标准考生复议将有明白账
雅思作文思路提高道路安全须用重典
雅思评分标准公布可减少估分误差和无效复议
畏惧心理是第一大障碍雅思口试的通关之道
雅思成为国内第一大留学类语言考试
北京地区雅思考试走势强劲考生数居全国第一
变题的官方解释五年内无实质性变化
雅思听力能力浅谈养成良好的听力习惯很重要
再谈雅思阅读高分关键
雅思将有新变化时尚生活等话题将成口试题材
英使馆雅思考试安排出台
名师答疑雅思考试口语部分如何才能考7分
中国学生为何难考雅思高分硬伤何处
雅思7分考生心得体会复习雅思要分三个阶段
在雅思写作中获得高分要从保底开始
雅思考试高分作文欣赏及雅思满分获得者心得
如何能在短期内提高分数
雅思写作批改老师浅析高分作文套路很重要
雅思写作见官死开头完全曝光
申请复审雅思成绩的方法及英文申请书信样本
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |