新概念第二册-lesson43.pptVIP

3. At one point, it seemed certain that their plane would crash. It could only get over the mountains if it rose to 10,000 feet. 4.Byrd at once ordered his men to throw out two heavy food sacks. The plane was then able to rise and it cleared the mountains by 400 feet. 在有个地方，飞机似乎肯定要坠毁了。只有在飞至10,000英尺的高度时，它才能飞过这些山头。 伯德马上命令他的助手们把两个沉重的食物袋扔掉，于是飞机可以上升了，它在离山头400英尺的高度飞越了过去。 5. Byrd now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight. 6. The aircraft was able to fly over the endless white plains without difficulty. 伯德这时知道他能够顺利飞抵300英里以外的南极了，因为前面再没有山了。 飞机可以毫无困难地飞过这片茫茫无际的白色原野！ The Antarctic is the most difficult continent to approach. The Antarctic continent is closest to the mainland of South America, between them is Drake Passage(德雷克海峡 ). The Antarctic continent and other continents are not only far apart, but also surrounded by a number of kilometers of ice shelves (冰架), In winter the area is up to 19 million square kilometers; even in the Antarctic summer, it also has 2.6 million square kilometers; the waters around the Antarctic continent are also covered by thousands of huge floating icebergs (冰山), causing great difficulties and dangers for maritime navigation. Discovery The old ice core which was found by Japanese Antarctic observation team on January 26, 2006 at the South Pole station near the base, which is under 9994 feet in the Antarctic ice , ice core contains many air bubbles(气泡) , these bubbles are most likely to stay millions of years ago .It will not only help us to understand the Earths past environment but also can be used to predict future climate through careful research. It has been estimated that this may be the worlds oldest ice core, with a history of about 100 million years. point : v. / n. 地点， 要点，重点 1. The river turns north at this point. 2. I dont see the point of her last remark. 我不明白她最后那句话的意思。 3. Im in a hurry, so come to the point. 我赶时间，直接了当说出来吧。 在某