阅读理解，选择正确的答案。

    April Fools'Day is a day to play jokes on others．No one knows how it began，but people think it first began in France．

    Each country celebrates April Fools'Day differently．In France，people call the April fools "April Fish"．They tape a paper fish to their friends' backs to fool them．When he or she finds this，they shout” April Fish!”

    In the UK，people play jokes only in the morning．You are a“noodle”if someone fools you．

    In the US，people play small jokes on their friends on the first of April．They may point down to your shoe and say，“Your shoelace iS untied．”If you believe them and look down，you are an April fool then．

有一则广告层让无数观众感动：在聚会上，一位身患阿尔茨海默病的父亲，将桌上剩下的饺子装进自己的口袋，还喃喃自语：“我儿子喜欢吃饺子。”旁白：“他忘记了一切，但从未忘记爱你。”

在思想品德课堂上，老师要求根据下列图片概括成就主题，你认为最合适的是（    ）