1. The document contains a listening test with multiple choice questions about customs in different countries and immigration facts. It tests understanding of words like "offended", "ceremony", and "confused" and contains sentences to correct involving customs in Vietnam, the US, and France. 2. The listening passage is about immigration and reasons why people immigrate. It states that Miami and Los Angeles have 63% immigrants and Dubai has an extremely high immigrant population, though the percentage in New York is 28%. 3. The answer key provides the correct answers to the multiple choice and sentence correction questions from the listening test. It evaluates understanding of customs in different places and facts presented about immigration populations in various cities.