【正文】 elatively easy entry to the region for the first time, and they also actively received farmers to settle there (the Santa Fe Railroad , for example , brought 10,000 German Mennonites to Kansas ). The railroads are criticized for their part in settling the West too rapidly , resulting in economic disorder . (After the Civil War vast Great Plains area was settled all at once .) Of course , there were rude words connected with building and operating the railroads , but it must be pointed out that they performed a useful service in spreading the frontier and helping to achieve national unity .The real tragedy of the rapid settlement of the Great Plains was the shameful way in which the American Indians were treated . Threatened with the destruction of their entire way of life , the Indians fought back bravely against the white’s final attack . Justice was almost entirely on the Indians’ side . The land was clearly theirs 。 necklines are lowered or raised , and so on .No one can claim that the fashion industry contributes anything really important to society . Fashion designers are rarely concerned with necessary things like warmth , fort and durability (耐用). They are only interested in outward appearance and they take advantage of the fact that women will put up with any amount of disfort , as long as they look right . There can hardly be a man who hasn’t at some time in his life smiled at the sight of a woman shaking in a thin dress on a winter day , or carefully picking her way through deep snow in highheeled shoes .When paring men and women in the matter of fashion , the conclusions to be drawn are obvious. Do the constantly changing fashions of women’s clothes , one wonders , reflect basic qualities of change and unsteadiness ? Men are too clever to let themselves be cheated by fashion designers . Do their unchanging styles of dress reflect basic qualities of steadiness and reliability (可靠) ? That is for you to decide .56．Designers and big stores always make money . A．by mercilessly exploiting women workers in the clothing industry B．because they are capable of telling in advance new fashions C．by constantly changing the fashions in women’s clothing D．because they consider the quality of women’s clothing very important 57．To the writer , the fact that women change their oldfashioned dresses is seen as . A．a(chǎn) waste of money B．a(chǎn) waste of time C．a(chǎn)n expression of taste D．a(chǎn)n expression of creativity 58．The writer would be less critical if fashion designers placed more stress on the of clothing . A．cost B．a(chǎn)ppearance C．fort D．suitability 59．By saying “the conclusions to be drawn are obvious” , the writer means that . A．women’s constant change in the choice of clothing is often laughed at B．women are better able to put up with disfort C．men are also exploited greatly by fashion designers D．men are more reasonable in the matter of fashion BPeople could land on Mars in the next 20 to 30 years provided scientists can find water on the red plant , the head of NASA’s surface exploration mission (任務(wù)) said on September 16.Two Mars Exploration Rovers have been wheeling slowly across 3 miles of the planet and into craters (火山口) since January . They have found ancient proof that water was once plentiful .Asked how long it could be before astronauts land on Mars , Arthur Thompson , manager for MER surface operations said , “My best guess is 20 to 30 years , if that bees our task of first importance .”“If we cannot find water , it really makes it difficult to send humans . Water is the key,” said Thompson , who was attending a mining engineers’ conference .Such a mission would take 11 to 12 months to get to Mars and it would be impossible to carry enough water for the astronauts , plus the water needed to make rocket fuel for the return journey , to cool the spacecraft and generate energy .Thompson said scientists had found a deep valley on Mars “that makes the Grand Valley look like a small one” , where water could still be present .“There are signs that there is actually water that spreads out the side of the valley ,and going down the side it changes into steam and disappears . We believe it’s an ongoing process,” he said .Three satellites now moving round Mars are constantly gathering information , and Thompson said “If there is water , we believe the chances of finding life are greatly increased.”60．From this passage , we can infer . A．there was once sign of life on Mars B．it won’t be long before man lands on Mars C．only if we find water on Mars could man land on it D．Mars is another planet where man can live 61．Mars’ surface is a large area of . A．flat land B．desert C．mountain D．rough land 62．It would take for an astronaut to make a journey to the Mars . A．one month B．a(chǎn)bout a year C．20 to 30 years D．three months 63． man will land on Mars in 20 or 30 years . A．It is probable that B．It is uncertain whether C．It’s impossible that D．It’s out of question that CNative Americans from the southeastern part of what is now the United States believed that the universe in which they lived was made up of three separate , but related , worlds : the Upper World , the Lower World , and This World . In the last there lived humans , most animals , and all plants .This World , a round island resting on the surface of waters , was hanging from the sky by four cords joined to the island at the four points of the pass . Lines drawn to connect the opposite points of the pass , from north to south and from east to west , crossed This World to divide it into four wedgeshaped(楔子狀的) parts . Thus a signal representation of the human world was a cross within a circle , the cross showing the crossing lines and the circle——the shape of This World .Each part of This World was shown by its own color . According to Cherokee principle, east was co