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Practice Listening: Summarize Spoken Text ID: #31193 Short Big Bang Theory
Instructions
The universe, as we know, it is actually really old. Do you know exactly how old is the universe is? The universe is about fifty billion years old, and it was discovered that the oldest star is about thirty billion years old, not older than the universe, which is perfectly matched. Well, people thought it might have expanded ten to twenty billion years ago. However, according to the Big Bang theory, it actually happened 13.7 billion years ago. The Big Bang Theory, also known as the cosmological model, is simply an amazing discovery, the expansion of the universe had rarely occurred 13.7 billion years ago, which can match the current prediction of the cosmological model. However, we are still not sure how many more years more in it will expand; the future is really unknown to us.
* Summarize in the box below (between 50 and 70 words)

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