Case Analysis                                          Twelve Cups of Tea When Thomas Jackson, a British traveller, first went to Hong Kong, he had no idea about Chinese tea-drinking and found himself caught in a very awkward situation. Once he visited a Chinese family and was immediately given a cup of tea. He was not thirsty and he did not particularly like that type of tea, but out of politeness he finished the cup. But the more he drank, the more he was given. Thomas Jackson kept insisting that he did not want any more, but the host took no notice. He drank about twelve cups of tea that afternoon! The host must have thought he was very greedy, but he did not know how to avoid getting more tea poured. 
Question: Why did Thomas Jackson drink twelve cups of tea that afternoon though he kept insisting that he did not want any more?. 
A、Because Thomas Jackson was too thirsty. 
B、Because Thomas Jackson liked drinking Chinese tea very much. 
C、Because Thomas Jackson were too shy to turn down the host's hospitality. 
D、Because Thomas Jackson violated Chinese tea-drinking custom