The canteen service seems to be getting worse and worse ever since last semester. The dishes are so limited that they seem to remain unchanged day after day. To make matters worse, the quantity has been on the decline while the prices are on the rise. It is true that we have a large and clean dining-hall, but it still can’t meet the increasing demand of all the students and teaching staff. If we do not finish our morning classes ahead of time, some of us cannot find their seats in ten minutes. The service is also far from satisfactory. The waiters and waitresses are so indifferent and cold that they would rather stand still than help the diners. It seems to me that all they have to do is receiving money and handing out bowls and plates. 第一句话是该段的主题句。