题目内容
阅读下面漫画，先对漫画的内容进行描述，然后对这一现象发表自己的看法。
词数要求：不少于100词。
参考诃汇：西瓜皮：water-melon skin 长凳：bench
One possible version
The boy and the girl in the picture sat on a bench talking merrily while eating a water-melon．When they went away they left the melon's skin on the bench，making it very dirty．They didn't want to take any trouble throwing it into the dustbin although it was very near where they were sitting．Instead，they said that there would be someone who should clean the rubbish．
However, what they did violates public morality．If everyone behaves in this way, the world will be a big rubbish dump with flies flying round and people will live in a world of diseases．Besides，dustmen will have a very, very hard job to clean the world we live in．
