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2011职称英语考前每日一练[理工类A级-第53期]

2011-02-14 09:16  来源:正保会计网校

  第6部分:完形填空(第51~55题,每题1分,共15分)

  下面的短文有15处空白,请根据短文内容为每处空白确定一个最佳选项。

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. 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________(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

同时按下Crtl键和A键查看答案
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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