An international team of astronomers working at telescopes in the Canary Islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter, the solar system's largest planet.
(A) astronomers working at telescopes in the Canary Islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter
(B) astronomers working at telescopes in the Canary Islands and Spain has detected at least 18 huge gas spheres that are at an estimated 5 to 15 times Jupiter's mass
(C) astronomers is working at telescopes in the Canary Islands and Spain, having detected at least 18 huge gas spheres that are estimated at 5 to 15 times the mass of Jupiter
(D) astronomers, working at telescopes in the Canary Islands and Spain, and has detected at least 18 huge gas spheres estimated at 5 to 15 times the mass of Jupiter
(E) astronomers, working at telescopes in the Canary Islands and Spain, has detected at least 18 huge gas spheres they have estimated as being 5 to 15 times Jupiter's mass
原文意思：一组科学家发现至少有18个gas spheres比jupiter要大5到15倍，jupiter是太阳系最大的行星。
题目分析：读完A觉得没有什么错误，留着。B结尾用jupiter‘s mass，可是后面说的是太阳系最大的行星，前面不应该说mass而是Jupiter，B干掉。C把重心放在is working上了，人家的愿意是这帮科学家发现一些大的气体星球，这个是句子强调重点，C句子重心放错了，杀。D用and has detected可是前面没有并列的表达方式，无法形成and所强调的并列，干掉。E结尾也说mass，杀。
