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(1)针(zhēn )对大四(sì )的毕业(yè )生,他(tā )们的书籍按(àn )斤(jīn )收(shōu )购,根据书(shū )籍的可再(zài )利用程(chéng )度,大(dà )学(xué )生党员自评总结,确定(dìng )旧书的收购(gòu )价格,通(tōng )常情(qíng )况下西(xī )政(zhèng )一届的毕(bì )业(yè )生有20xx人左右,据调查(chá )有85%的同(tóng )学会选择将其书(shū )