It's still the holiday season and students in the UK are enjoying their winter break (休假).
    Tiffany in Guangdong asks us about how British students spend their winter break.
    For some, it's a time to study because they have exams next term. Some might have to study. They have to read some books. They use the winter break to catch up with(赶上) their reading. But some students can Let their hair down and celebrate Christmas and New Year with a few drinks.
    This holiday is also an important time to chat with the family and maybe get some sleep too. Some lucky students are going away on holiday but it won't be long.

如图，在边长为1个单位长度的小正方形组成的12×12网格中，给出了四边形ABCD的两条边AB与BC，且四边形ABCD是一个轴对称图形，其对称轴为直线AC．

阅读材料，回答下列问题。

材料一：青田县地处浙江省东南部，瓯江中下游，地形崎岖，以中山和丘陵为主，有“九山半水半分田”之称。耕地面积17万亩，其中水田14．6万亩。

材料二：青田县传统农业技术──“稻田养鱼”技术被联合国粮农组织列为全球重要农业文化遗产。田鱼是以田间昆虫、杂草为食，通过“稻鱼共生”长成。在西班牙马德里，1斤左右的田鱼每条卖到40欧元。

材料三：浙江省青田县“稻田养鱼模式图”