problem D) The natives of the land E) Cold climate F) Land and population
25. For as long as three months of a year, the sun ________ on the ice-covered land of Alaska. 6. According to statistics, _________ of the total area of Alaska has been used for farming. 7. Alaska was originally part of Russia, but was bought _______. 8. Gold did not bring to Alaska as much wealth__________ A. as fish does B. because of its rich natural resources C. by the United States in the 19th century D. shines day and night E. only a very small percentage F. a limited amount of the gold found there.
18、 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 degrees Fahrenheit below zero. Reading of 85 degrees below zero are common in both the Arctic and Antarctica. Winter temperatures average 30 d3egrees below zero in the Arctic. At the South Pole the winter average 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 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 al times. Not even for a moment can they be unprotected against the below-zero temperatures. 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 in 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 has not always been a frozen continent. At one time the weather in Antarctica may have much like our own. Explorers 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.
1The lowest temperature that man has ever known was recorded in Antarctica.
2Winter temperatures average 85 degrees below zero in Antarctica.
3The Arctic and Antarctica are no man''s lands because of their notorious coldness.
4Polar explorers can stay alive without heaters and windproof shelters.
5Despite the hostile environment, both animals and plants can be found in the oceans and on land in polar areas.
6 As discovered by expedition scientists, Antarctica has not always been so cold as it is today, so has the Arctic.
7At one time, the weather in Antarctica was so warm and damp that trees grew there.
19、 Smuggling It is not unusual for a pet to be sent by air cargo from Colombia to New York, but last December''s shipment of a 4-year-old sheep dog caught a New York Kennedy Airport Customs inspector''s eye. The dog looked to be on its last legs, and there was an unusual lump on the side of its body. An X-ray and emergency surgery revealed the presence of 10 condoms tightly packed with five pounds of cocaine that had been surgically implanted in the dog''s abdomen - yet another first for Customs in the war on drugs. When it comes to transporting drugs, the methods /www.yingyukaoshi.com/ used are only as limited as a smuggler''s imagination. Kilo bricks of cocaine are routinely concealed beneath false bottoms of containers that hold poisonous snakes. "You''ve got snakes that are 12feet long," says a United States Fish and Wildlife Service agent - and sometimes the drug is in the snake. "Who''s going to pull it out and feel it?" In 1994, United States Customs seized 204,391 pounds of cocaine, 559,286 pounds of marijuana and 2,577 pounds of heroin. Just how much actually flows into the country is anyone''s guess. Some customs officials estimate that only 10 percent of the drugs coming into the country are ever seized. In Miami, the District Attorney won''t even prosecute small fry. "It''s got to be over five kilos of cocaine, above a kilo of heroin and more than 5,000 pounds of marijuana or it''s not something that we''re going to stop the presses on," says Tom Cash, a retired agent. Given this deluge, one can only wonder if agents are ever confounded by some of the smuggling methods. "There are things we haven''t seen before," says John McGhee, a Miami Customs special agent, "but nothing really surprises us."
1 The dog was different from others in that
2 How many methods are used to transport drugs?
3How many pounds of heroin were estimated to be smuggled into the United States in 1994?
4Which of the following could best replace the expression "small fry" in the third paragraph?
5 What is this article about?
20、 Life in the Universe Many scientists today are convinced that life exists elsewhere in the universe---life probably much like that on our own planet. They reason in the following way. As far as astronomers can determine, the entire universe is built of the same matter. They have no reason to doub
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