假設你是某中學的學生會主席，請你根據下面提綱以學生會的名義向高三學生用英語寫一封倡議書。
內容：①倡議高三年級同學在畢業之前捐出舊的書報，雜志詞典等，贈給低年級同學。
②捐贈的意義（鼓勵節約，增進友愛等）。
③捐贈的地點是學生活動中心，捐贈時間是1月15日——25日。
注意：
1、詞數100左右；
2、可以適當增加細節內容，以使行文連貫。
Dear Senior Three students，
    Our government is aiming to build a "conservation-oriented society"（節約型社會）.______

【考點】提綱作文；厲行節約；倡議書．

【答案】Dear Senior Three students，
Our government is aiming to build a "conservation-oriented society"（節約型社會）.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