13、Some cities held the Olympic Games more than once. Do you know __ 41 __  they are?

The first city needed to mention is Athens, the place where the first Olympic Games took place in 1896. And this city __ 42 __ ( have ) a long history of ancient Olympics since 776 BC. Athens chose olive branch as symbol of peace and friendship in the first Olympic Games. In the new Millennium ( 千年 ), Athens held the Olympic Games again, __ 43 __ symbolizes ( 象征 ) for the Olympic cycle and also the hope of peace and __ 44__ ( happy ) in the world during the new century.

In 1900, the World Fair and Olympic Games both were held in Pairs. Women attended the Olympics for the first time. They attended __ 45 __ performing event. In 1924, Paris held the Olympics again.

The 30^th Olympic Games __ 46 __ ( hold ) in London. __ 47 __ has already held the Olympic Games twice. In 1908, because the Vesuvius ( 维苏威火山 ) erupted, the Olympic Games was transferred to be held in London. In 1948 right __ 48 __ the Second World War, it was debatable ( 有争议的 ) __ 49 __ to hold sports event or not for a while. The 1948 London Olympics went popular and comforted people’s hearts __ 50 __ ( suffer ) from the war. Now London is going to be the city holding the Olympic Games most times.