2022年12月大学英语四级听力真题原文100篇(75)

2022-09-06 08:28:00来源:网络

  面对即将到来的大学英语四级考试,你是否已经做好了准备?新东方在线英语四级频道为大家整理了2022年12月大学英语四级听力真题原文100篇(75),供大家参考,预祝大家高分通过大学英语四级考试!

  2022年12月大学英语四级听力真题原文100篇(75)

  News Item 075-最大的天文望远镜

  The mirror of the Hubble(哈勃)Space Telescope that gave us the stunning(惊艳的)pictures of deep space is only about 4.5 square meters.

  The primary mirror of the James Webb Space Telescope will be 25 square meters, so astronomers(天文学家)expect even higher-quality results.

  But both will be dwarfed(比下去)by the Giant Magellan Telescope, under construction in Chile’s(智利)Atacama Desert. Its mirror array(镜像数组)covers about 368 square meters.

  By looking at different parts of the visible and infrared spectrums( 红 外 线 光 谱 ), the two new telescopes will complement each other, says Magellan Telescope director Patrick McCarthy.

  “The two working together, I think, will give us a complete picture, whether we are looking at planets around nearby stars, black holes in the centers of other galaxies(星系), or back to that early universe that we call the First Light, when we see the first stars in the first galaxies. ”

  To isolate it from vibrations(振动), the 1,200-ton telescope will rest on an oil flotation bearing system, completely free of any friction(摩擦力). A range of cameras and spectrographs(光谱摄制仪)will record and dissect(分析)the received light, looking for signatures of atoms(原子)and molecules(分子). And the light coming from billions of kilometers away may be impossibly faint.

  “The photons(光子)come in one every 15 to 20 minutes, so it takes a long time to collect that light. In our case, we think we’ll get a few photons a minute, but you need hundreds to get a good signal, so it just takes patience. ”

  以上是新东方在线英语四级频道小编为大家带来的“2022年12月大学英语四级听力真题原文100篇(75)”,希望考生们都能备考顺利,取得出色的成绩。


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