9．
The 2012Summer Olympics was held in London，UK．The city becomes the first in history to host the Olympic Games three times．
The London 2012Olympic mascots，which are named after two small English towns，are Wenlock and Mandeville．They only have one eye．But they look very friendly．Wenlock is wearing bracelets（手链）in the colors of the Olympic rings．UK children and families helped design the mascots．
On May 5，2012，the Olympic Stadium opened in east London．Schoolchildren in London were the stars of the day．Niamh Clarke-Willis，a 9-year-old girl，pressed the button to open the Olympic Stadium with London 2012Chairman Sebastian Coe．There were more than 40，000people taking part in the ceremony．The stadium can hold 80，000people，It hosted the Opening Ceremony of the London Olympics on July 27．
The tickets for the London 2012Olympics went on sale on March 15，500days before the Games began．There were 6.6million tickets to buy in six weeks．The cheapest cost is﹩20（210yuan） and the most expensive is﹩2，012（21，000yuan）．
50．How many times has London held the Olympic Games？C
A．Once．
B．Twice．
C．Three times．
D．Four times．
51．What do the names of the 2012Summer Olympic mascots come from？D
A．Two UK children．
B．Two UK officers．
C．Two UK families．
D．Two small English towns．
52．Which of the following is Not True？A
A．The mascots have two big eyes．
B．The stadium can hold 80，000people．
C．The Olympic Stadium opened in east London．
D．The Opening Ceremony of the London Olympics was held on July 27，2012．
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