【单选题】

Passage 1Most people who work in London get a break of about an hour for lunch.As they mostly live too far from home to go back there for lunch, they are obliged to make other arrangements for their midday meal. Many large firms have a canteen for their employees. In such canteens the food served is plain but adequate, and although there is some variety of choice, the number of dishes is usually small. The employees themselves fetch their dishes from a counter at which they are serveD、Some firms that do not run a canteen provide their staff with luncheon vouchers, which many restaurants will accept in place of money. As there are so many people at work in London, there are numerous cafés and restaurants in every area that is not purely residential.

A、meal may cost anything from a modest sum to quite a few pounds, depending on the restaurant and the food chosen. Moreover, one can generally get a meal, or at least a snack, in a puB、
A、number of wellknown caterers run popular cafés in practically every district of London. In many of these cafés there is selfservicethere are no waiters or waitresses. Instead the customers help themselves and pay at a cashdesk before going to their tables. In recent years there has also been a big increase in the number of “take away” food shops of all kinds. Many employees do not bother to go out for lunch. They bring their own sandwiches, and perhaps an apple or a bun, with which they have a cup of tea, probably made in the office. This method has the advantages of being cheap and of saving time in getting to a restaurant and queuing up there. Some people have a quick meal in the office because _____.
A、they bring their own sandwiches
B．they like queuing in the office to make a cup of tea
C． they want to save time and save money
D．they want to eat with their colleagues