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1.the earliest Chinese records about acupuncture date from the 2th century AD.
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In topics :
China
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Acupuncture
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Alternative-medicine
2.the sperm was first observed in 1677 by means of a microscope by Antoni van Leeuwenhoek ?
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In topics :
Netherlands
3.your heart when you reach the age of 66 will have beaten ca 2.5 billion times ?
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In topics :
Human
4.the small intestine in an adult person has an average length of 6-7 meters ?
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In topics :
Human
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