根据以下内容回答题：Many American college and university students live in university residence halls．These halls are popularly called“dorms”．Residence halls may offer various types of living accommodations． There are single rooms，in which a student lives alone but there probably are a good many more double rooms，which two students share．Some dorms have sets of rooms，where small groups of students have separate bedrooms but share a bathroom and maybe a study room． There are usually a number of conveniences available for those living in university resi-dence halls．Most have washing machines and clothes dryers for use by the residents．Many dorms have kitchens where students can prepare light meals．Residence halls generally provide not only room and board but public rooms and recreational facilities and sometimes study rooms for their use． If you live in a dormitory you need to know what the rules and regulations are．Meals usually are served at only certain hours，and you must be there at those hours if you expect to eat．There may be only certain hours when visitors may come，or they may be limited to certain areas of the dormitory．Often cooking in bedrooms is prohibited，and the use of certain pieces of electrical equipment such as coffee pots or hair dryers may be limited． Living in a residence hall carries certain obligation．You have to be considerate of others，especially during study hours．Telephone calls and visits by friends should be short．You have to cooperate in keeping the room as neat as possible．It is sometimes hard to be tolerant of another person’S habits that may differ from your own． Residence halls in American universities provide__________．