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Do you have the ability to live cheaply? Now here's a true story of an American girl，Sarah．1Sarah left university，she began to live in New York City on her own．She 2 a job in a publishing house，but the salary(薪水)was 3 $30，000 a year．Her parents thought her life would be hard，but Sarah 4live on her salary and still saved $5，000 in a year．How was that 5 in one of the most expensive cities in the world? Cheap living 6starts with keeping the big cost small．For most people，that 7housing．So Sarah chose to share a flat with three other friends．Her next biggest cost was 8．When she ate out，she went to cheap restaurants．9 she bought a $9．99 whole chicken at a local restaurant．She then10the chicken bones(骨头)home and made soup out of them．Nowadays young people often 11 a lot of money on entertainment(娱乐)．But Sarah said，"I enjoy walking 12 in New York City．I love going to museums and parks．" Did Sarah feel poor13 cheap living? Not really．She even managed to take two trips，one to the Netherlands，14to Portland． “Don't think of saving money as something15．It's a kind of game，"said Sarah．
近现代世界民主政治的建设经历了一个比较曲折的过程，请完成相关问题探究。
【历史回眸】
材料一：政治制度，必然得自根自生。纵使有些可以从国外移来，也必然先与其本国传统有一番融合铸 造，方能真实发生相当的作用。否则无生命的政治，无配合的制度，决然无法长成。换言之，制度必须与人事相配合。——钱穆《中国历代政治得失·序》
【对比分析】
图一英国政治制度结构示意图 图二中国政治制度结构示意图
甲车的速度是乙车的80％，甲车的速度比乙车慢____％，乙车的速度比甲车快____％．
(2015−π)0+(−13)−2=____
的二项展开式中，若常数项为
，则
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