How much do you know about sports?(Who can answer?)

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1.How often do the Winter Olympics happen? 2.When were the Barcelona Olympics? 3.How does a 100 metres race start? 4.Where does the sport of judo come from? 5.How long does an ice hockey match last? 6.What kind of ball do they use in the game of rugby? 7.In which country is baseball the national sport? 8.How many sports are there on a dice? 9.Who starts in a game of chess: the black or the white player? 10.In which sports do player use a racket? 11.Why does the referee toss a coin at the biginning of a football match? 12.What happens if the score is a draw at the end of the World Cup football final?