Passage One
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 ________.
细节题。从原文第三段第一句话“科学家称这颗行星围绕太阳公转一周可能要花上一万到两万年的时间。”可以得知这颗新发现的行星是围绕太阳转的。从第一段可以知道发现它的是两个研究人员，所以B的说法不对，第一段中的long and thin orbit可以得知C是错的，第一段第一句就说了是far out in our solar system，是在太阳系较远的地方，而不是D中所说的离太阳系很远的地方。
【参考译文】
科学家称他们已经发现证据证明太阳系及远的地方还有一颗巨大的行星。在声明中，加利福利亚科技部Caltech声称这颗行星在遥远的太阳系以一种奇怪的又长又窄的轨道运行。这是有Caltech的两名研究人员发现的：Konstaintin Batygin和Mike Brown。他们通过数学建模和计算机模拟找到了这个行星。到现在为止，还未对这颗行星有任何直接发现。
“我惊讶的下巴都快掉到地上了”,宇航员Mike Brown在发现可能有第九颗行星时说到。
科学家称这颗行星围绕太阳公转一周可能要花上一万到两万年的时间。这颗被称作“九号行星”的新行星大概是地球的十倍大。如果他们的推测是真的话，这颗新发现的行星将会是太阳系的第九颗行星。2006年以前，冥王星被称作为第九行星，之后就被重新命名为“侏儒行星”。
对第九颗行星的真正确认将会是令人震惊的消息。Brown在声明中说：“这将会是真正的第九颗行星。从远古时代起，就只发现了两个真正的行星，这将会是第三个。这是太阳系中未被发掘的秘密中很重要的一部分，这真是太令人兴奋了。”
目前为止还没有“九号行星”的照片，科学家说他们正在用地球上最大一同时最好的望远镜来试图找到“九号行星”。他们也在致力于改进计算机模拟，以找到更多关于“九号行星”运行轨道的信息，以及它对太阳系外部的影响。
The possibility of finding a ninth planet made Mike Brown ________.
词汇理解题，从题干定位到原文第二段，my jaw hit the floor下巴掉到地板上了，表明很惊讶。
According to the scientists, ________.
细节题。根据关键词Pluto定位到第三段最后一句——2006年以前，冥王星被称作为第九行星，之后就被重新命名为“侏儒行星”，也就是说冥王星曾经被认为是太阳系的第九颗行星，因此答案选C。
It can be inferred from Paragraph 4 that ________.
推理判断题。从第四段的第一句Actual confirmation of a ninth planet would be very big news(对第九颗行星的真正确认将会是令人震惊的消息)，言外之意就是还未能真正确认，所以正确答案选A。
To find “Planet Nine” , scientists are using all the following EXCEPT ________.
细节题。文章第一段倒数第二句就提到使用mathematical modeling and computer simulations to find the planet，最后一段又提到they are using the bigger-and best-telescopes on Earth to try to find “Planet Nine”，只有选项D是没有提到的，所以答案选D。