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2021-01-27	epidemiology1	75	Check this topic
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2023-06-29	Vivian Chang	73	Check this topic
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2022-12-23	nikki07hung	88	Check this topic
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2017-12-15	hunghanchen	37	Check this topic
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Topic title: Did bees a type of insect exist on Earth as early as 200 million years ago Such a theory is supported by the discovery of very old fossil structures that resemble bee nests The structures have been found inside 200 million year old fossilized trees in the

Topic category: Integrated TOEFL Writing