完形填空。 The Olympic Games began in Olympia, a small town in 1 many years ago. The modern Olympic Games 2 in 1896 to promote (促进) international understanding through 3 . Nine nations 4 the Games. In 1936, a black American runner 5 four gold medals in Germany. (     )1. A. Greece (     )2. A. held (     )3. A. singers (     )4. A. joined (     )5. A. have won B. Germany B. was held B. players B. took part B. wins C. France C. hold C. dancers C. took part in C. had won D. Australia D. were held D. politicians (政治家) D. have joined in D. won