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53.China’s new high-speed railway plan will be a win-win project because . A.China will get much-needed resources and develop its western regions B.China and the countries involved will benefit from the project in various ways C.China will develop its railway system and communication with other countries D. the foreign countries involved will develop their railway transportation，business and tourism 54.According to the passage，the greatest challenge to the new high-speed railway plan is . A.technical issues B.safety of the system C.financial problems D.maintenance of railway tracks 55.Which of the following words best describes the author’s attitude towards China’s high-speed railway plan? A.Critical. B.Reserved. C.Doubtful D. Positive. 56.Which of the following might be the best title for the passage? A.New Railway Standards B.Big Railway Dreams C.High—speed Bullet Trains D.International Railway Network E The 2012 London Olympics had enough problems to worry about. But one more has just been added - a communications blackout caused by solar storms. After a period of calm within the Sun, scientists have detected the signs of a cycle of sunspots that could peak in 2012, just in time for the arrival of the Olympic torch in London. Now scientists believe that this peak could result in vast solar explosions that could throw billions of tons of charged matter towards the Earth, causing strong solar storms that could jam干扰 the telecommunications satellites and interact links sending five Olympic broadcast from London. "The Sun's activity has a strong influence on the Earth. The Olympics could be in the middle of the next solar maximum which could affect the functions of communications satellites," said Professor Richard Harrison, head of space physics at the Rutherford Appleton Laboratory in Oxfordshire. At the peak of the cycle, violent outbursts called coronal mass ejections (日冕物质抛射) occur in the Sun's atmosphere, throwing out great quantities of electrically-charged matter. "A coronal mass ejection can carry a billion tons of solar material into space at over a million kilometres per hour. Such events can expose astronauts to a deadly amount, can disable satellites, cause power failures on Earth and disturb communications," Professor Harrison added. The risk is greatest during a solar maximum when there is the greatest number of sunspots. Next week in America, NASA is scheduled to launch a satellite for monitoring solar activity called the Solar Dynamics Observatory (SDO), which will take images of the Sun that are 10 times clearer than the most advanced televisions available. The Rutherford Appleton Laboratory helped to make the high-tech cameras that will capture images of the solar flares (太阳耀斑) and explosions as they occur. Professor Richard Holdaway, the lab's director, said that the SDO should be able to provide early warning of a solar flare or explosion big enough to affect satellite communications on Earth "If we have advance warning, we'll be able to reduce the damage. What you don't want is things switching off for a week with no idea of what's caused the problem," he said. 57. The phrase "communications blackout" in paragraph 1 most probably refers to during the 2012 Olympics. A. the extinguishing of the Olympic torch B. the collapse瘫痪 of broadcasting systems C. the transportation breakdown in London D. the destruction of weather satellites 58. What can be inferred about the solar activity described in the passage? A. The most fatal matter from the corona falls onto Earth. B. The solar storm peak occurs in the middle of each cycle. C. It takes several seconds for the charged matter to reach Earth. D. The number of sunspots declines after coronal mass ejections. 59. According to the passage, NASA will launch a satellite to _________. A. take images of the solar system B. provide early warning of thunderstorms C. keep track of solar activities D. improve the communications on Earth 60. Which of the following might be the best title of the passage? A. Solar Storms: An Invisible Killer B. Solar Storms: Earth Environment in Danger ks*5u C. Solar Storms: Threatening the Human Race D. Solar Storms: Human Activities to Be Troubled 五. 句型转换(共10小题;每小题1分，满分10分) 1.My sister asked me, “ How do you like the film?” My sister asked me ______ _______ ______ ______ film. 2.My brother joined the football club five years ago. My brother ________ ______ ______ the football club_____ five years. 3.The boys and girls stopped making noise when the teacher went into the classroom. The boys and girls ______ _____ making noise _____the teacher _______ the classroom. 4. It cost him $1500 in all. The money he _______ _______ ______ ______ $1500. 5.It rained yesterday, so I didn’t go out. I didn’t go out yesterday _______ _______ _______ _______. 6.It seems that Wang Wei was excited about it. Wang Wei _______ ______ ________ ______ about it. 7.Although I read the story for the first time, I was immediately attracted by its beautiful town in the story. I was immediately attracted by its beautiful town in the story _____________________ it was the first time ________ I __________ read the story. 8.You have a wrong way to solve the problem. That is why you fail to work it out. The _______ ________ you fail to work out the ________ is ______ you’ve chosen a wrong method. 9.He wanted to set up a modern factory not in a big city but in a mountain village. (责任编辑：admin) |