单选题 The tango has probably traveled further and gone through more changes than almost 1 . African slaves brought the tango to Haiti and Cuba in the 18th century; in Cuba, the tango was influenced by the local Cuban dance, 2 "the Havana". From there 3 took the tango in Argentina in the 19th century, 4 it was changed once again and became popular in the 5 . It was an erotic dance of working class people by this time. 6 made it difficult for middle-class Europeans to accept.
7 at the beginning of this century, the tango was refined, so that it 8 its erotic features. It was preformed in 9 casino ballrooms. The tango, in its sophisticated European 10 , became popular in England and in the USA. Once 11 , the tango became the rage in London and Paris. People began to 12 the Viennese waltz custom of dancing in restaurants between the 13 of a meal Proprietors 14 this, "for the pleasure of the customers and for the benefit of their digestion"! After "tango teas" 15 everywhere, even in private houses, Latin American music was played for the tango, 16 more and more people owned gramphones.
The tango returned in 17 in a freer, more exotic form than 18 . Rudolph Valentino, the Holly-wood film star, began his 19 as a professional tango partner in American tea-rooms. Valentino 20 immortalized the dance on film.