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35.A. preserve B. to preserve C. being preservedD. preservingVI. Read the passage, and choose the correct answer A, B, c or D for eachquestion.Ca Tru was also called “Hat A Dao” or “Hat Noi”. Originally, attractive youngfemale singers entertained men in a relaxed environment, sometimes serving drinks andsnacks. Men might have visited a “Hat A Dao” inn with friends to celebrate a successfulbusiness deal or the birth of a son.Ca Tru flourished in the 15

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century in northern Vietnam when it was popular withthe royal palace and a favourite hobby of aristocrats and scholars. Later, it wasperformed in communal houses, inns, and private homes, and gained its high popularity.These performances were mostly for men. When men entered a Ca Tru inn, theypurchased bamboo tally cards. In Chinese Vietnamese, “tru” means “card”, and “ca”means “song” in Vietnamese, so the name Ca Tru means tally card songs. The tallieswere given to the singers in appreciation for the performance. After the performanceeach singer received payment in proportion to the number of cards received.Ca Tru requires at least three performers. The singer is always a woman and plays the“phach”, an instrument made of wood or bamboo that is beaten with two wooden sticks.A musician accompanies the singer on the “dan day”, a long-necked lute with three silkstrings and 10 frets. There is also a drummer or “trong chau”. The drummer shows hisapproval of the singer or the songs depending on how he hits the drum. If he likes asong, he might hit the side of the drum twice. The “dan day” player must follow therhythm of the “phach”. His instrument, the “dan day”, is only used in Ca Tru and is nowmade almost exclusively for sale to tourists.