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本文为大家搜集整理了2014职称英语考试综合类完形填空专项训练，供大家参考。 完形填空 ,阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 Solar Storm At the end of October 2003, a sudden solar storm hit the earth. A solar storm _1_ the large amounts of charged particles released into space when the solar energy increases. The release of the energy takes place _2_ with the activity of the sunspots with a cycle of 11 years. This time, the _3_ of the storm exceeded expectations. This _4_ of intense solar storms was caused by the eruption of a solar flare and the ejection of the solar corona on October 28, 2004. Large amounts of charged particles moved 150,000,000 kilometers through space toward the _5_ in 19 hours. They could affect aircraft roaming in space. The high-energy particles will _6_ some of the parts of an aircraft. They may also cause it to fail. High-energy particles can threaten the safety of an aircraft at a high orbit. If an aircraft orbits at a lower orbit, it is safe because it is under the _7_ of the earths magnetic field. A solar storm not only affects aircraft but also is a _8_ to the environment and humans. The aerosphere and magnetic field of the earth can protect humans from ultraviolet radiation and X-rays. _9_ most of the X-rays are absorbed after it enters the aerosphere, still a few can reach the ground. This kind of radiation, if any, only lasts for several minutes or dozens of minutes, so its effect on humans is very _10_. | 
