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单项选择题

A．further actions to force speeds up
B．further actions to force speeds down
C．no further actions to force speeds up
D．no further actions to force speeds down
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单项选择题A．the spectators and officialsB．the carsC．the sports starsD．All of the above

A．the spectators and officials
B．the cars
C．the sports stars
D．All of the above

单项选择题A．Pulleta Gopichand.B．Peter Gade.C．Chen Hong.D．Prakash Padukon

A．Pulleta Gopichand.
B．Peter Gade.
C．Chen Hong.
D．Prakash Padukon