托福TPO72综合写作阅读原文+听力原文及音频下载

托福TPO72综合写作阅读原文+听力原文及音频下载

阅读部分：

Transient lunar phenomena (TLP) are relatively brief flashes of light that appear to come from the surface of the Moon. Such flashes of light have been observed for centuries by both amateur and professional astronomers, and several theories have been put forward to explain them.

One theory is that TLP are not genuine lunar phenomena, but only random observational errors caused by defects in the telescopes some observers use. Optical instruments such as telescopes or microscopes are complex pieces of machinery; even small flaws in their design can create artificial optical impressions like flashes or other distortions in the visual field. To an observer, a flash of light caused by an instrument error may sometimes look like a real phenomenon taking place in nature.

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听力部分：

Unfortunately, none of the theories presented in the reading selection really explain TLP.

First, if TLP observations were caused by random flaws in telescope design, then the reports of the TLP would be pretty random as well. Observers with flawed telescopes would probably report TLP happening at many random places on the moon surface, but that's not what observers have been reported. Most observers report TLP from two very specific locations on the moon surface. Since TLP are so closely associated with specific places on moon, they probably reflect real events happening on the moon, not flaws in telescopes.

Second, about the meteor. The flashes of light that meteor impacts produce usually last just one second, but the average duration of a TLP is 20 minutes. It is true that meteor showers in which 。。。。余下托福TPO72综合写作听力原文省略！

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