全文获取类型
收费全文 | 7207篇 |
免费 | 113篇 |
国内免费 | 76篇 |
专业分类
教育 | 4883篇 |
科学研究 | 680篇 |
各国文化 | 51篇 |
体育 | 710篇 |
综合类 | 219篇 |
文化理论 | 73篇 |
信息传播 | 780篇 |
出版年
2022年 | 52篇 |
2021年 | 114篇 |
2020年 | 115篇 |
2019年 | 157篇 |
2018年 | 167篇 |
2017年 | 188篇 |
2016年 | 182篇 |
2015年 | 195篇 |
2014年 | 273篇 |
2013年 | 1154篇 |
2012年 | 325篇 |
2011年 | 335篇 |
2010年 | 354篇 |
2009年 | 333篇 |
2008年 | 317篇 |
2007年 | 319篇 |
2006年 | 298篇 |
2005年 | 224篇 |
2004年 | 195篇 |
2003年 | 146篇 |
2002年 | 181篇 |
2001年 | 132篇 |
2000年 | 153篇 |
1999年 | 100篇 |
1998年 | 82篇 |
1997年 | 84篇 |
1996年 | 88篇 |
1995年 | 73篇 |
1994年 | 78篇 |
1993年 | 67篇 |
1992年 | 54篇 |
1991年 | 77篇 |
1990年 | 56篇 |
1989年 | 50篇 |
1988年 | 42篇 |
1987年 | 49篇 |
1986年 | 48篇 |
1985年 | 48篇 |
1984年 | 49篇 |
1983年 | 43篇 |
1982年 | 33篇 |
1981年 | 37篇 |
1980年 | 31篇 |
1979年 | 25篇 |
1978年 | 34篇 |
1977年 | 43篇 |
1976年 | 29篇 |
1975年 | 23篇 |
1974年 | 24篇 |
1972年 | 14篇 |
排序方式: 共有7396条查询结果,搜索用时 15 毫秒
61.
课堂是严肃的、神圣的,保持课堂教学的有序、高效是永恒的目标.但课堂上不可避免地会出现一些突发事件,有来自教师方面的,也有学生方面的,还有设备方面、自然灾害方面的等等,无论哪一方面的突发事件,都需要教师保持冷静和清醒的头脑、讲究处理的方式方法、及时沉着应对,以尽可能不影响课堂教学且有利于问题的解决为原则.无论发生什么事情,只要心中有学生,任何事情都会巧妙、妥善处理好的.课堂上突发事件的处理是一门艺术,体现着教师的综合素质. 相似文献
62.
Aaron J. Beach René E. D. Ferdinands Peter J. Sinclair 《Sports biomechanics / International Society of Biomechanics in Sports》2016,15(3):295-313
Spin bowling is generally coached using a standard technical framework, but this practice has not been based upon a comparative biomechanical analysis of leg-spin and off-spin bowling. This study analysed the three-dimensional (3D) kinematics of 23 off-spin and 20 leg-spin bowlers using a Cortex motion analysis system to identify how aspects of the respective techniques differed. A multivariate ANOVA found that certain data tended to validate some of the stated differences in the coaching literature. Off-spin bowlers had a significantly shorter stride length (p = 0.006) and spin rate (p = 0.001), but a greater release height than leg-spinners (p = 0.007). In addition, a number of other kinematic differences were identified that were not previously documented in coaching literature. These included a larger rear knee flexion (p = 0.007), faster approach speed (p < 0.001), and flexing elbow action during the arm acceleration compared with an extension action used by most of the off-spin bowlers. Off-spin and leg-spin bowlers also deviated from the standard coaching model for the shoulder alignment, front knee angle at release, and forearm mechanics. This study suggests that off-spin and leg-spin are distinct bowling techniques, supporting the development of two different coaching models in spin bowling. 相似文献
63.
Paul S. R. Goods Brian Dawson Grant J. Landers Christopher J. Gore Kevin Croft Peter Peeling 《European Journal of Sport Science》2016,16(8):1047-1054
This investigation examined the oxidative stress (F2-Isoprostane; F2-IsoP) and inflammatory (interleukin-6; IL-6) responses to repeat-sprint training in hypoxia (RSH). Ten trained male team sport athletes performed 3(sets)*9(repetitions)*5?s cycling sprints in simulated altitude (3000?m) and sea-level conditions. Mean and peak sprint power output (MPO and PPO) were recorded, and blood samples were collected pre-exercise, and again at 8 and 60?min post-exercise. Both MPO and PPO were significantly reduced in hypoxia (compared to sea-level) in the second (MPO: 855?±?89 vs. 739?±?95?W, p?=?.006; PPO: 1024?±?114 vs. 895?±?112?W, p?=?.010) and third (MPO: 819?±?105 vs. 686?±?83?W, p?=?.008; PPO: 985?±?125 vs. 834?±?99?W, p?=?.008) sets, respectively. IL-6 was significantly increased from pre- to 1?h post-exercise in both hypoxia (0.7?±?0.2 vs. 2.4?±?1.4?pg/mL, p?=?.004) and sea-level conditions (0.7?±?0.2 vs. 1.6?±?0.3?pg/mL, p?.001), with a large effect (d?=?0.80) suggesting higher IL-6 levels of post-hypoxia. F2-IsoP was significantly lower 1?h post-exercise in both the hypoxic (p?=?.005) and sea-level (p?=?.002) conditions, with no differences between trials. While hypoxia can impact on exercise intensity and may result in greater post-exercise inflammation, it appears to have little effect on oxidative stress. These results indicate that team sport organisations with ready access to hypoxic training facilities could confidently administer RSH without significantly increasing the post-exercise inflammatory or oxidative stress response. 相似文献
64.
Purpose: The purpose of this study was to investigate whether loads carried in a backpack, with a load mass ranging from 0 to 20?kg, causes respiratory muscle fatigue. Methods: Eight males performed four randomised load carriage (LC) trials comprising 60?min walking at 6.5?km?h?1 wearing a backpack of either 0 (LC0), 10 (LC10), 15 (LC15) or 20?kg (LC20). Inspiratory (PImax) and expiratory (PEmax) mouth pressures were assessed prior to and immediately following each trial. Pulmonary gas exchange, heart rate (HR), blood lactate and glucose concentration and perceptual responses were recorded during the first and final 60?s of each trial. Results: Group mean PImax and PEmax were unchanged following 60-min load carriage in all conditions (p?>?.05). There was an increase over time in pulmonary gas exchange, HR and perceptions of effort relative to baseline measures during each trial (p?.05) with changes not different between trials (p?>?.05). Conclusions: These findings indicate that sub-maximal walking with no load or carrying 10, 15 or 20?kg in a backpack for up to 60?min does not cause respiratory muscle fatigue despite causing an increase in physiological, metabolic and perceptual parameters. 相似文献
65.
66.
语言习得理论对英语口语教学的启示 总被引:1,自引:0,他引:1
本概述了二语习得理论及其对口语教学的启示,并认为其理论有待于在实践中进一步完善。 相似文献
67.
Peter Colenso 《Compare》2005,35(4):411-428
There is increasing interest in understanding and describing the links between education and ‘social cohesion’. However, the theoretical and empirical base for understanding these links is limited. There is also a shortage of practical tools for education policy‐makers and planners, to help them assess the impact of policies and investments, and to plan for future reform. This paper describes the initial development of an analytical and planning framework for addressing education and social cohesion within the context of a sector‐wide approach to education reform in Sri Lanka. A brief literature review suggests three inter‐connected domains in which links between education and social cohesion might be usefully analysed, together with three working hypotheses: (i) political economy/governance: education affects social cohesion through transparency and participation in education policy formulation, planning and management; (ii) equity/equality of opportunity: education affects social cohesion through the distribution of education resources, opportunities and outcomes; (iii) teaching/learning: education affects social cohesion through the development of certain competencies in students. Drawing on this analytical framework, research conducted in Sri Lanka is used to identify a set of interventions to promote social cohesion, with corresponding baseline, process and outcome indicators as benchmarks for measuring the progress and impact of intended policy measures. This process is described within the context of a ‘sector‐wide approach’ to education reform, intended to bring together the activities of the government and external partners within a single comprehensive medium‐term planning and budgetary framework. 相似文献
68.
用"三心"培育学生健康成长 总被引:2,自引:0,他引:2
情感教育,指教育者对接受教育的对象。动之以情.晓之以理”的教育方式。这种教育方式在现今实施素质教育中起着至关重要的作用。 相似文献
69.
马龙 《河南广播电视大学学报》2003,16(4):42-43
章论述了师德建设在素质教育中的地位及意义,讨论了师德建设的主要内容,并指出了当前师德建设中应注意的问题。 相似文献
70.
从硫化铜矿制取硫酸铜工艺研究 总被引:1,自引:0,他引:1
硫化铜经粉碎,催化焙烧,浸取,铁屑置换制海绵铜,再制取符合GB473-93优等品的硫酸铜产品。 相似文献