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  3. The journey two naval (海军的) officers made some time ago to the very deepest point on the earth makes us realize how much of the

The journey two naval (海军的) officers made some time ago to the very deepest point on the earth makes us realize how much of the

admin2009-08-15  109
问题     The journey two naval (海军的) officers made some time ago to the very deepest point on the earth makes us realize how much of the world still remains to be explored. The two men went down seven mi les to the bottom of the Pacific Ocean inside a small steel ball called a "bathyscaphe" to find out if there are any signs of life.
    It was necessary to set out early. So that the bathyscaphe would come to the surface in daylight and so be easily found by the mother ship which would be waiting for it. The drivers began preparations at dawn and soon afterwards, when all was ready, the steel ball disappeared under the surface of the water.
    In time, the temperature dropped to freezing-point and the men trembled inside the ball. They kept in touch with the mother-ship by telephone describing how they felt. Then, at a depth of 3 000 feet, the telephone stopped working and they were quite cut off from the outside world. At 30 000 feet, the men were surprised by a sudden, loud noise: even the smallest hole in the ball would have meant instant (立即的，瞬间) death. Luckily, though, it was only one of the outer windows that had broken. Soon afterwards, the bathyscaphe touched the soft ocean floor raising a big cloud of "dust" made up of different kinds of small, dead sea animals. Here, powerful lights lit up the dark water and the men were surprised to see fish swimming just a bove them quite untroubled by the very large water pressure (压力). But they did not dare to leave the lights on for long, as the heat from them made the water boil. Quite unexpectedly, the telephone began working again and the weak but clear voices of the officers were heard on the mother-ship. After a stay of thirty minutes the men began their journey up, arriving three hours later, cold and wet through, but none the worse for their experience.
选项 A、so that they could return before dark
B、because the sea then was calm
C、because they wanted to return to the mother ship in twenty four hours
D、when the sun was not too strong
答案A
解析 答案在第二段的开头两句。
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