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2017年职称英语理工类B级-《阅读判断》备考复习模拟练习题(一)

来源:考职称网 发布时间:2017-02-16
  阅读判断。位于考试题型的第二部份,这部份题型是根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C。下面为大家提供2017年职称英语理工类B级-《阅读判断》备考复习模拟练习题(一):  The Northern Lights  The Sun is stormy and has its own kind of weather. It is so hot and active that even the Sun’s gravity cannot hold its atmosphere in check! Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma, and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun, the stronger the solar wind.  The solar wind constantly streams toward the Earth, but don’t worry because a protective magnetic field surrounds our planet. The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles. The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth’s magnetic field, the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.  The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth’ s atmosphere at the poles. As the electrons fall to the Earth, they collide with gas molecules in the atmosphere, creating flashes of light in the sky. Each atmospheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky, they create the Northern Lights and the Southern Lights.  Watching auroras is fun and exciting, but normally you can only see them in places far north like Alaska and Canada. The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate, flicker, or even move like waves. During solar maximum, auroras are seen as far south as Florida, even Mexico!  Auroras often seem to be very close to the ground, but the lowest aurora is still about 100 kilometers above the ground, a distance much higher than clouds are formed or airplanes can fly. A typical aurora band can be thousands of kilometers long, a few hundred kilometers high, but only a few hundred meters thick.  We hope you are able to travel to far-north places like the Arctic Circle and see the Northern Lights at least once during your lifetime. We know you will never forget it!  16. The Sun’s gravity is too weak to keep its plasma from flowing to the Earth.  A. Right B. Wrong C. Not mentioned  17. The Earth is quite safe with a magnetic field surrounding it to protect it from the attack by the solar wind.  A. Right B. Wrong C. Not mentioned  18. Some scientists are worrying about the possible disappearance of the Earth’s protective magnetic field in the future.  A. Right B. Wrong C. Not mentioned  19. The auroras are formed when the electrons falling into the Earth’s atmosphere at the poles and colliding with gas molecules in the atmosphere.  A. Right B. Wrong C. Not mentioned  20. You cannot sec the Northern Lights unless you are in Alaska or Canada.  A. Right B. Wrong C. Not mentioned  21. Tens of thousands of tourists take special trips to Norway and Sweden every year to watch the Northern Lights.  A. Right B. Wrong C. Not mentioned  22. An aurora is generally close to the ground and is very long and thick.  A. Right B. Wrong C. Not mentioned  【相关阅读】  2017年职称英语零基础上班族考生备战方案  
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