hasenas
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Relationships
Is there a friendship between a guy and a girl?
Opinions are always divided on this issue. Some say that there is no such friendship because you simply cannot deceive…
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Education and Refrence
The Big Bang Theory in Astronomy
Scientists still do not have exact information about how the universe came into being. The most widespread in astronomy is…
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Education and Refrence
Lever balance rule and its application
In everyday life, people often have to use the rule of leverage in order to perform a wide variety of…
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