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2010职称英语考前每日一练[理工类A级-第30期]

2010-01-22 11:12 来源:  纠错 打印 收藏   

  第六部分的完形填空

Solar Storm

  At the end of October 2003, a sudden solar storm hit the earth. A solar storm refers to the large amounts of charged particles released into space _____(51) the solar energy increases. The release of the energy _____ (52) place along with the activity of the sunspots with a cycle of 11 years. This time, the _____ (53) of the storm exceeded expectations.
  This _____(54) of intense solar storm was caused by the eruption of a solar flare (闪光) and the ejection (喷发) of the solar corona (日冠) on October 28, 2003. Large amounts of charged particles moved 150,000,000 kilometers through space toward the _____(55) in 19 hours. They could affect aircraft roaming (漫游) in space.
  The high-energy particles will _____(56) some of the parts of an aircraft. The~ 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 _____(57) because it is under the protection of the earth's magnetic field.
  A solar storm not only affects aircraft but also is a _____(58) to the environment and humans. The aerosphere and magnetic field of the earth can _____(59) humans from ultraviolet radiation and X-rays. While most of the X-rays are absorbed after they enter the aerosphere (大气层), still a few can _____(60) the ground.
  The geomagnetic storm caused by this round of solar storm reaches its highest level on the two _____(61) of the earth, which affects electricity supply of North America. Overexposure to _____(62) threatens the health of passengers on planes flying over the Polar Regions. If we fly in the sky during such a solar storm, it _____(63) we receive ten times the X-ray radiation. It's really damaging.
  Scientists say a solar eruption is like the sun sneezing, which will make the earth _____(64) a cold. Though this natural force is irresistible, scientists can still _____(65) its movement accurately by monitoring. Facing successive solar storms, humans can't drop their guard.
 
  51 A since     B when     C until     D though
  52 A finds     B adjusts   C holds     D takes
  53 A intensity  B height   C width     D density
  54 A piece     B part     C round     D set
  55 A star     B earth    C moon      D sun
  56 A dominate   B develop   C damage     D descend
  57 A safe     B dangerous C comfortable D manageable
  58 A limit     B cause    C force     D threat
  59 A separate   B benefit   C distinguish D protect
  60 A lose     B reach    C break     D prepare
  61 A poles     B mountains C rivers     D lakes
  62 A light     B storm    C radiation   D pressure
  63 A recommends B means    C proposes   D advises
  64 A turn     B stop     C become     D catch
  65 A detect    B start    C experience  D change
  参考答案:51. B  52. D  53. A  54. C  55. B 56. C  57. A  58. D  59. D  60. B 61. A  62. C  63. B  64. D  65. A

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