Arnold Wu was a proud[自豪的] man."I am sure my family is one of the oldest in the country,"he often told people."It has a long history[历史]."One day he went to see an expert[专家] in family history, Mrs. Li."I want you to find out everything about my family," he said."Where do we come from? Who was the first Wu? Were there any famous people in the family? Do I
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