The passage states the benefits and the worry of social practice for senior school students: it enriches students’ social experience and rewards them with money, but it may affect their studies and values. So, students should balance their studies and social practice.

Knowledge is a treasure,but practice is the key to it. Nowadays, more students have opportunities to join in various social activities, including military training, voluntary work in a community service, a part-time job in a super-market, etc. They learn how to serve, how to cooperate and how to solve problems. Gradually they will become strong-willed, kind-hearted and enthusiastic in study and life.

Two years ago, I organized a team of classmates to a Charity House where orphans and the disabled live. There we told stories to the blind, we drew beautiful pictures for the deaf, we helped friends in the wheelchair go around. It was the visit that made me realize that helping others should not be only an empty talk and that life is worth cherishing.

题目分析：本文属于读写任务写作，动笔前，一定要认真阅读原文，并理解内容。认真看清题目要求，这篇书面表达给了一段材料：先要求以约30个词概括上文的主要内容，要求有很高的概括提炼的能力，要抓住文章的主题，再以约120个词写一篇短文，按照要点去表达，不能有遗漏，写作时注意准确运用时态，上下文意思连贯，符合逻辑关系。写作时尽量使用自己会的单词、词组和句型，同时也要注意使用一些高级语法和句型，使自己的文章更有文采。

【亮点说明】这篇范文要点全面，语言精炼，简单句和复杂句交叉使用：如They learn how to serve, how to cooperate and how to solve problems. 这句话用了疑问词+不定式做宾语， Two years ago, I organized a team of classmates to a Charity House where orphans and the disabled live. 这句话用了定语从句，There we told stories to the blind, we drew beautiful pictures for the deaf, we helped friends in the wheelchair go around. It was the visit that made me realize that helping others should not be only an empty talk and that life is worth cherishing.这句话用了强调句。