閱讀理解。 |
Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is to send a few comets (彗星) in the direction of Earth, and its orbit will be changed. Our world will then be sent into a safer, colder part of the solar system. This idea for improving our climate comes from a group of US National Aeronautics and Space Administration( NASA) engineers and American astronomers. They say their plan could add another six billion years to the useful lifetime of our planet-effectively doubling its working life. The plan put forward by Dr Laughlin, and his colleagues Don Korycansky and Fred Adams, needs carefully directing a comet of asteroid (小行星) so that it passes close by our planet and sends some of its gravitational energy to Earth. "Earth's orbital speed would increase as a result and we could move to a higher orbit away from the Sun," Laughlin said. Engineers would then direct their comet so that it passed close to Jupiter or Saturn. The comet would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated. In the short term, the plan provides an ideal way to global warming, although the team was actually concerned with a much greater danger. The sun is certain to heat up in about a billion years and so "seriously compromise" our biosphere (生物圈)-by cooking us. That's why the group decided to try to save Earth. The plan has one or two worrying aspects, however. For a stairt, space engineers would have to be very careful about how they directed their asteroid or comet towards Earth. The smallest miscalculation (誤算) in orbit could fire it straight at Earth-with deadly results. There is also the question of the Moon. As the scientific American magazine points out, if Earth was pushed out of its current position it is "most likely that the Moon would be stripped away from Earth," it states. This would change our planet's climate. |
1. If the plan is successful, Earth will have a working life of ____ years. |
A. 12 billion B. 6 billion C. 18 billion D. 24 billion |
2. What makes the scientists plan to save Earth? |
A. A few comets are moving to the direction of Earth. B. Earth's working life is coming to an end soon. C. Earth will become too hot for mankind to keep alive. D. The moon is moving farther and farther away from Earth. |
3. What does the underlined word" compromise" mean? |
A. provide B. benefit C. share D. endanger |
4. What serious problems might the plan cause according to the passage ? |
A. Earth might be moved too far away and man might be frozen to death. B. The comet might hit Earth and man might lose the moon. C. The comet might hit Jupiter or Saturn and never return toEarth. D. Earth's working life might be greatly shortened. |
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科目:高中英語 來源:黑龍江省哈爾濱市五縣2009-2010學(xué)年高二下學(xué)期期末聯(lián)考試題(英語) 題型:閱讀理解
IV.閱讀理解(共20小題;每題2分; 滿分40分)
Football--called soccer in the United States--is probably the most popular sport in the world today, It has been popular for a long time. But many years ago each country had different rules for its own football game.
In 1863 a group of people met in England to change this. They wrote a set of rules for all countries to follow. They also planned for soccer teams from different countries to play against each other. The idea worked. These rules are the same today, more than 100 years later. Now teams from all the world compete in the famous World Cup. The cup is a series of games which is held every four years. Team from many countries plays to see which is the best. Soccer is so popular today that it is not unusual for 600 million people to watch a World Cup match on television.
How did the World Cup start? The soccer team from Uruguay won the Olympic championship in soccer in 1924 and 1928. That country decided to have the first World Cup games in Montevideo in 1930, These first games were not very successful. Only thirteen teams arrived to play and eight of them were from South America.
It didn't seem like a world championship. The team from Uruguay won the Cup that first year.
56. In 1863 a group of people met in England______.
A. to play for football teams from different countries
B. to learn the rules for football
C. to write a set of rules for football
D. to have matches between teams from different countries
57. The rules written in 1863 are _____.
A. the same as today's B. different from today's
C. changed a lot D. changed a little
58. When did the first World Cup take place?
A. In 1930. B. In 1924. C. in 1928 D. In 1934
59. The first World Cup was not successful because
A. the Olympic champion didn't take place
B. some of the teams arrived too late
C. all teams were from South America
D. it did not seem like a world championship
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