Write at least 60 words about the topic“The Fun of Learning ________(playing the piano / doing housework / playing football / English /…) ”. (以“学……的乐趣”为题写一篇不少于60个词的短文，标点符号不占格。)

Use the following points as a reference. (以下问题仅供参考)

1. your experience of learning…… (give an example)

2. reason (s) you think it is fun learning……

简述实现作物最大光合潜力的途径。