答案:B
統計:A:6,B:31,C:9,D:12,E:0
難度:適中
【吃貨】評論
During the 1920s, dancing for amusement started gaining wider acceptance, and the number of newly invented dances soared. In America, this obsession was the foundation of a novel competition: the dance marathon, where contestants showed off their dancing skills and physical endurance. During every hour, couples would dance for 45 minutes and then take a 15-minute break.(A) It was not unusual for these marathons to last for weeks or even months! The longest one ended after 5,152 hours (B), and the winning pair got $2,000, about 1.5 times the average of American’s annual salary at the time! (D)