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The Cold Places The Arctic is a polar region. It surrounds the North Pole. Like Antarctica, the Arctic is a land of ice and snow. Antarctica holds the record for a low temperature reading 125 Fahrenheit below zero. Readings of 85 degrees below zero are common in both the Arctic and Antarctica. Winter temperatures average 30 degrees below zero in the Arctic At the South Pole the winter is about 73 degrees below zero. One thing alone makes it almost impossible for men to live in Antarctica and in parts of the Arctic. This one thing is the low temperature--the killing chill of the far North and the polar South. To survive, men must wear the warmest possible clothing. They must build windproof shelters. They must keep heaters going at all times. Not even for moment can they be unprotected against the below-zero temperature. Men have a way of providing for themselves. Polar explorers wrap themselves in warm coats and furs. The cold makes life difficult. But the explorers can stay alive. What about animals? Can they survive? Do we find plants? Do we find life in the Arctic and the Antarctica? Yes, we do. There is life in the oceans. There is life on land. Antarctica, as we have seen, is a cold place indeed. But this has not always been the case. Expedition scientists have discovered that Antarctica may have been much like our own. Explores have discovered coal in Antarctica. This leads them to believe that Antarctica at one time was a land of swamps and forests. Heat and moisture must have kept the trees in the forests alive.
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Athens 2004 has been proven to be the best Olympic Games
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语法与词汇Security officials say that computer crime is easy to accomplish and hard to (detect).
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语法与词汇The sound of the drums was (distinct) even from a distance.
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语法与词汇Rose stood there until she finally lost sight of the train.
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语法与词汇His new girlfriend (omitted)to tell him that she was married.
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语法与词汇(Subsequent) events proved the man to be right.
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语法与词汇The technicians (conducted) investigations before they put forward the suggestions at the meeting.
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语法与词汇How many radios will your factory (turn out) this year?
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语法与词汇A seismograph is a (device) designed to measure vibrations of the ground.
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语法与词汇The train came to an (abrupt) stop, making us wonder where we were.
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语法与词汇When he got out of the managers office, from his facial expression we knew that his proposal must have been (turned down).
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语法与词汇The kinds of the oil use (affect) your health.
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语法与词汇Because of her rudeness to customers, the waitress has been (fired).
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语法与词汇A visit to the Computer Center has (aroused) the students interest in computer science.
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语法与词汇Grandfather would (stay up) till small hours reading.
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语法与词汇Excuse me for (troubling) you with such a small matter.
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语法与词汇The train stopped (abruptly), making us wonder where we were.
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语法与词汇Alex knew that he must (breathe) nothing of this to Nancy.
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语法与词汇Large areas of Alaskan land remain (desolate) due to harsh climate.
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