四则运算的意义和性质文件:
{'kemuvalue': {'jianpin': 'sx', 'pinyin': 'shuxue', 'name': '\xe6\x95\xb0\xe5\xad\xa6'}, 'grade': '1', 'sea_url': 'http://bkproxy.cooco.net.cn/api/search/doclist?doc_title=\xe5\x9b\x9b\xe5\x88\x99\xe8\xbf\x90\xe7\xae\x97\xe7\x9a\x84\xe6\x84\x8f\xe4\xb9\x89\xe5\x92\x8c\xe6\x80\xa7\xe8\xb4\xa8&doc_grade=&doc_stage=&doc_kemu=sx&doc_type=kejian', 'Tagdata': {'name': '\xe4\xb8\x80\xe5\xb9\xb4\xe7\xba\xa7\xe6\x95\xb0\xe5\xad\xa6\xe8\xaf\xbe\xe4\xbb\xb6', 'pinyin': 'yinianjishuxuekejian', 'filetype': 1L, 'kemu': 'sx', 'nianji': 1L, 'type': '1', 'id': 409L}, 'typename': 'kejian', 'kemu': 'sx', 'nianji': 1L, 'data': {'name': '\xe5\x9b\x9b\xe5\x88\x99\xe8\xbf\x90\xe7\xae\x97\xe7\x9a\x84\xe6\x84\x8f\xe4\xb9\x89\xe5\x92\x8c\xe6\x80\xa7\xe8\xb4\xa8', 'haveindex': 1L, 'grade': '1', 'oldurl': 'http://k.3edu.net/sx1/Soft_2490.html', 'filetype': 1L, 'fileext': '\xe5\x85\xb1\xe4\xba\xab\xe7\x89\x88', 'url': '1/386/181886.zip', 'kemu': 'sx', 'gradename': '\xe4\xb8\x80\xe5\xb9\xb4\xe7\xba\xa7\xe6\x95\xb0\xe5\xad\xa6\xe8\xaf\xbe\xe4\xbb\xb6', 'oldid': 2490L, 'pinyin': 'yinianjishuxuekejian', 'date': datetime.date(2011, 5, 7), 'type': '\xe6\x96\xb0\xe4\xba\xba\xe6\x95\x99\xe7\x89\x88', 'id': 181886L, 'size': '250'}}
{u'msg': u'\u83b7\u53d6\u6587\u6863\u5217\u8868\u6210\u529f', u'code': u'SUCCESS', u'data': {u'doc_list': [{u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/12/04/22/5fca4475e2b29.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u4e94\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'2013\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u300a\u5206\u6570\u7684\u610f\u4e49\u548c\u6027\u8d28\u590d\u4e60\u300bppt\u8bfe\u4ef6(\u7b2c\u4e8c\u8bfe\u65f6)', u'doc_id': 232688, u'doc_size': u'1.24MB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/12/03/18/5fc8bfe35374c.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u4e94\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'2013\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u300a\u5206\u6570\u7684\u610f\u4e49\u548c\u6027\u8d28\u590d\u4e60\u300bppt\u8bfe\u4ef6(\u7b2c\u4e00\u8bfe\u65f6)', u'doc_id': 232687, u'doc_size': u'1.37MB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/30/11/5fc46aab68e7b.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u4e94\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u300a\u5206\u6570\u7684\u610f\u4e49\u548c\u6027\u8d28\u590d\u4e60\u300bppt\u8bfe\u4ef6(\u7b2c\u4e00\u8bfe\u65f6)', u'doc_id': 225282, u'doc_size': u'1.37MB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/30/11/5fc46aada75a8.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u4e94\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u300a\u5206\u6570\u7684\u610f\u4e49\u548c\u6027\u8d28\u590d\u4e60\u300bppt\u8bfe\u4ef6(\u7b2c\u4e8c\u8bfe\u65f6)', u'doc_id': 225283, u'doc_size': u'1.24MB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/28/00/5fc12420c73d9.ppt', u'doc_online_time': u'', u'doc_stage': u'gz', u'doc_gold': 10, u'doc_grade': u'\u9009\u4fee2-2', u'doc_version': u'\u4eba\u6559\u7248\u9ad8\u4e2d', u'doc_fmt': u'ppt', u'doc_title': u'\u7b2c\u4e8c\u8282\u5bfc\u6570\u7684\u8fd0\u7b97\u6cd5\u5219', u'doc_id': 139960, u'doc_size': u'505.5KB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/27/22/5fc1117242bd1.ppt', u'doc_online_time': u'', u'doc_stage': u'gz', u'doc_gold': 10, u'doc_grade': u'\u9009\u4fee1-1', u'doc_version': u'\u4eba\u6559\u7248\u9ad8\u4e2d', u'doc_fmt': u'ppt', u'doc_title': u'\u7b2c\u4e8c\u8282\u5bfc\u6570\u7684\u8fd0\u7b97\u6cd5\u5219', u'doc_id': 138047, u'doc_size': 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u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/12/05/01/5fca77d7d2370.ppt', u'doc_online_time': u'', u'doc_stage': u'cz', u'doc_gold': 10, u'doc_grade': u'\u516b\u5e74\u7ea7\u4e0a\u518c', u'doc_version': u'\u534e\u4e1c\u5e08\u5927\u7248\u521d\u4e2d', u'doc_fmt': u'ppt', u'doc_title': u'\xa719.1 .1\u5e73\u884c\u56db\u8fb9\u5f62\u7684\u5b9a\u4e49\u3001\u6027\u8d28', u'doc_id': 239688, u'doc_size': u'551.5KB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/28/12/5fc1cd21d7bca.rar', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u56db\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'rar', u'doc_title': u'(\u82cf\u6559\u7248)2018\u5e74\u4e94\u5e74\u7ea7\u4e0a\u6570\u5b66\uff1a\u7b2c3\u5355\u5143-\u5c0f\u6570\u7684\u610f\u4e49\u548c\u6027\u8d28ppt\u8bfe\u4ef6\u5168\u96c6', u'doc_id': 157246, u'doc_size': u'11.05MB'}, {u'doc_type': u'kejian', u'doc_kemu': 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u'(\u82cf\u6559\u7248)2018\u5e74\u4e94\u5e74\u7ea7\u4e0a\uff1a\u7b2c3\u5355\u5143-\u5c0f\u6570\u7684\u610f\u4e49\u548c\u6027\u8d28-\u8bfe\u65f6\u4f5c\u4e1a\u5168\u96c6(\u6709\u7b54\u6848)', u'doc_id': 157247, u'doc_size': u'700.64KB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/12/04/21/5fca368423321.rar', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u56db\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'2013\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'rar', u'doc_title': u'(\u82cf\u6559\u7248)2018\u5e74\u4e94\u5e74\u7ea7\u4e0a\uff1a\u7b2c3\u5355\u5143-\u5c0f\u6570\u7684\u610f\u4e49\u548c\u6027\u8d28-\u8bfe\u65f6\u4f5c\u4e1a\u5168\u96c6(\u6709\u7b54\u6848)', u'doc_id': 230816, u'doc_size': u'700.64KB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/30/11/5fc46a9e99314.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u4e94\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u516b\u5e74\u7ea7\u4e0a\u9636\u6bb5\u65b9\u6cd5\u6280\u5de7\u8bad\u7ec3\u8bfe\u4ef6\uff1a\u5206\u5f0f\u7684\u610f\u4e49\u53ca\u6027\u8d28\u7684\u56db\u79cd\u9898\u578b-(\u65b0\u8bfe\u6807\u4eba\u6559\u7248\u6570\u5b66)', u'doc_id': 225278, u'doc_size': u'1.34MB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/12/03/18/5fc8be90d5484.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u4e94\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'2013\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u516b\u5e74\u7ea7\u4e0a\u9636\u6bb5\u65b9\u6cd5\u6280\u5de7\u8bad\u7ec3\u8bfe\u4ef6\uff1a\u5206\u5f0f\u7684\u610f\u4e49\u53ca\u6027\u8d28\u7684\u56db\u79cd\u9898\u578b-(\u65b0\u8bfe\u6807\u4eba\u6559\u7248\u6570\u5b66)', u'doc_id': 232683, u'doc_size': u'1.34MB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/29/05/5fc2baba009c3.ppt', u'doc_online_time': u'', u'doc_stage': u'cz', u'doc_gold': 10, u'doc_grade': u'\u4e5d\u5e74\u7ea7\u4e0a\u518c', u'doc_version': u'\u5317\u5e08\u5927\u7248\u521d\u4e2d', u'doc_fmt': u'ppt', u'doc_title': u'\u300a26.1.2.2\u53cd\u6bd4\u4f8b\u51fd\u6570\u7684\u56fe\u8c61\u548c\u6027\u8d28\u7684\u7684\u7efc\u5408\u8fd0\u7528\u300bppt\u8bfe\u4ef6', u'doc_id': 181593, u'doc_size': u'1.86MB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/29/23/5fc3bb68754a1.ppt', u'doc_online_time': u'', u'doc_stage': u'cz', u'doc_gold': 10, u'doc_grade': u'\u516b\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'\u82cf\u6559\u7248\u521d\u4e2d', u'doc_fmt': u'ppt', u'doc_title': u'\u300a26.1.2.2\u53cd\u6bd4\u4f8b\u51fd\u6570\u7684\u56fe\u8c61\u548c\u6027\u8d28\u7684\u7684\u7efc\u5408\u8fd0\u7528\u300bppt\u8bfe\u4ef6', u'doc_id': 207878, u'doc_size': u'1.86MB'}, {u'doc_type': u'kejian,jiaoan', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u5c0f\u5b66', u'doc_version': u'\u5176\u5b83\u7248\u5c0f\u5b66', u'doc_fmt': u'', u'doc_title': u'(\u82cf\u6559\u7248)2018\u5e74\u56db\u4e0a\u6570\u5b66\uff1a\u7b2c7\u5355\u5143-\u6574\u6570\u56db\u5219\u6df7\u5408\u8fd0\u7b97ppt\u8bfe\u4ef6\u5168\u96c6-(\u56db\u5e74\u7ea7)', u'doc_id': 159979, u'doc_size': u'0B'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/11/29/16/5fc362a935d64.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u516d\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'\u82cf\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u4eba\u6559\u65b0\u8bfe\u6807-\u6b63\u6bd4\u4f8b\u548c\u53cd\u6bd4\u4f8b\u7684\u610f\u4e49_2PPT', u'doc_id': 198791, u'doc_size': u'464KB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/12/04/22/5fca497128d44.ppt', u'doc_online_time': u'', u'doc_stage': u'xx', u'doc_gold': 10, u'doc_grade': u'\u516d\u5e74\u7ea7\u4e0b\u518c', u'doc_version': u'2013\u4eba\u6559\u7248\u5c0f\u5b66', u'doc_fmt': u'ppt', u'doc_title': u'\u4eba\u6559\u65b0\u8bfe\u6807-\u6b63\u6bd4\u4f8b\u548c\u53cd\u6bd4\u4f8b\u7684\u610f\u4e49_2PPT', u'doc_id': 233380, u'doc_size': u'464KB'}, {u'doc_type': u'kejian', u'doc_kemu': u'sx', u'doc_link': u'http://bkfiles.cooco.net.cn/upload/WLYQ/2020/12/04/03/5fc93803d0292.ppt', u'doc_online_time': u'', u'doc_stage': u'cz', u'doc_gold': 10, u'doc_grade': u'\u516b\u5e74\u7ea7\u4e0a\u518c', u'doc_version': u'\u534e\u4e1c\u5e08\u5927\u7248\u521d\u4e2d', u'doc_fmt': u'ppt', u'doc_title': 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