【简答题】San Francisco's Chinatown is the biggest and oldest in the country. It's the third most visited tourist destination in the city. It's also the city's most densely populated neighbor- hood. So why are....
【简答题】Carl: Hi. My name's Carl. Nice to meet you. Pancho: Nice to meet you, too. My name is Francisco. Carl: What? Pancho: Francisco, but all my friends and family back in Peru call me Pancho. Carl: Okay, P...