阿摩線上測驗
49. What is true about the dancing marathon in America?
(A) The hourly time ratio of dancing and rest was about 4 to 1.
(B) The all-time lengthiest one lasted for about seven months.
(C) The competition was once written into a story as a book.
(D) The prize money of the record-long contest was rather humble.
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統計： A(30), B(139), C(48), D(43), E(0) #3229033
統計： A(30), B(139), C(48), D(43), E(0) #3229033
