2. 外语
  3. Scientists said they have found evidence of a giant planet far out in our solar system. In a statement, the California Institute

Scientists said they have found evidence of a giant planet far out in our solar system. In a statement, the California Institute

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问题    Scientists said they have found evidence of a giant planet far out in our solar system. In a statement, the California Institute of Technology—Caltech—said this planet travels a very strange "long and thin orbit in the distant solar system". The discovery was made by two researchers at Caltech: Konstantin Batygin and Mike Brown. They used mathematical modeling and computer simulations(模拟) to find the planet. So far, there have not been any direct observations of the planet.
   "My jaw hit the floor, " said astronomer(宇航员) Mike Brown, the moment he realized there might be a ninth planet.
   The scientists said it would take this planet 10, 000 to 20, 000 years just to make one full orbit around the sun. The new planet, called "Planet Nine" , has a mass about 10 times the size of Earth. If they are right, the newly found planet would be the ninth planet in our solar system. Pluto (冥王星) had been called the ninth planet until 2006, when it was renamed a " dwarf planet".
   Actual confirmation of a ninth planet would be very big news. "This would be a real ninth planet, " Brown said in the statement. " There have only been two true planets discovered since ancient times, and this would be a third. It’ s a pretty substantial chunk of our solar system that’ s still out there to be found, which is pretty exciting. "
   While they did not get a picture of "Planet Nine" yet, the scientists say they are using the biggest—and best—telescopes on Earth to try to find "Planet Nine". They are also working on improving their computer simulations. They want to find out more about "Planet Nine’ s" orbit, and its impact on the outer part of our solar system.
The newly-found planet______.
选项 A、moves around the Sun
B、was discovered by two astronomers
C、travels a round orbit
D、is far away from our solar system
答案A
解析 细节题。根据文章第三段第一句可知，这颗新发现的行星是围绕太阳转的，故选A(围绕太阳转)。从第一段第三句和第二段可知，是两位研究员发现了这颗行星，其中一个研究员是宇航员，故选项B(被两位宇航员发现)错误。从第一段第二句可知，这颗行星运行的轨道非常奇怪，又长又窄，选项C(以圆形轨道运行)错误。从第一段第一句可知，它是在太阳系较远的地方，选项D(远离太阳系)错误。
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