托福TPO阅读之Meteorite Impact

  下面是一篇托福TPO阅读模拟题,这篇托福阅读模拟题的主要内容是关于陨石撞击和恐龙灭绝的相关信息,恐龙的灭绝有各种各样的说法,陨石是一个非常流行的说法,那么这种说法的具体描述什么样子的呢?下面是详细内容。

  There is increasing evidence that the impacts of meteorites have had important effects on Earth, particularly in the field of biological evolution. Such impacts continue to pose a natural hazard to life on Earth. Twice in the twentieth century, large meteorite objects are known to have collided with Earth.

  If an impact is large enough, it can disturb the environment of the entire Earth and cause an ecological catastrophe. The best-documented such impact took place 65 million years ago

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