A、three. B、five. C、two. D、four. A此题考查听细节的能力。在文章的第一段就提到了the Upper Class，the Middle Class，and the Lower or Working Class．上层阶级，中层阶

Multiculturalism and a changing economy are gradually taking away the British class sys tem, although features of the system remain.
    Sociologists define social class as the grouping of people by occupations. Doctors and lawyers and university teachers are given more status than unskilled labourers. The different positions represent different levels of power, influence and money.
    The British society is often considered to be divided into three main groups of classes -- the Upper Class, the Middle Class, and the Lower or Working Class. This is known as the Class system
    The Upper Classes tends to consist of people with inherited wealth, and includes some of the oldest families, with many of them being titled aristocrats. The upper classes are de fined by their title, but also by their education, and their pastimes which includes the traditional sporting life involving hunting, shooting and fishing, as well as a great deal of horse riding for both leisure and as a competitive pursuit.
    The Middle Classes are the majority of the population of Britain today. They include industrialists, professionals, businesspeople and shop owners.
    Working class people are mostly agricultural, mine and factory workers.
    You can tell which class people belong to by the way they speak (accent), their clothes, their interests, the way that they educate their children, or even the type of food they eat.