假设你是某中学的学生会主席，请你根据下面提纲以学生会的名义向高三学生用英语写一封倡议书。
内容：①倡议高三年级同学在毕业之前捐出旧的书报，杂志词典等，赠给低年级同学。
②捐赠的意义（鼓励节约，增进友爱等）。
③捐赠的地点是学生活动中心，捐赠时间是1月15日——25日。
注意：
1、词数100左右；
2、可以适当增加细节内容，以使行文连贯。
Dear Senior Three students，
    Our government is aiming to build a "conservation-oriented society"（节约型社会）.______

【考点】提纲作文；厉行节约；倡议书．

【答案】Dear Senior Three students，
Our government is aiming to build a "conservation-oriented society"（节约型社会）.So the Students' Union of our school is arranging an activity so that we can make the best use of our learning materials.Students of Senior Three are called on to give away used books，newspapers or magazines to the students in the lower grades.The idea，which is intended to promote friendship，encourage economy and protect environment，is highly praised and supported by the teachers and students.The activity will be held at the student center ，lasting about ten days from January 15 to 25.
As a student，I'm strongly for the activity because it is very meaningful and helpful.I hope this kind of activity will continue in the future.
Students' Union