首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   37536篇
  免费   603篇
  国内免费   67篇
教育   27254篇
科学研究   3041篇
各国文化   392篇
体育   2854篇
综合类   52篇
文化理论   251篇
信息传播   4362篇
  2022年   243篇
  2021年   410篇
  2020年   578篇
  2019年   903篇
  2018年   1261篇
  2017年   1258篇
  2016年   1131篇
  2015年   706篇
  2014年   1041篇
  2013年   7475篇
  2012年   1030篇
  2011年   1040篇
  2010年   828篇
  2009年   832篇
  2008年   896篇
  2007年   829篇
  2006年   805篇
  2005年   733篇
  2004年   594篇
  2003年   573篇
  2002年   529篇
  2001年   772篇
  2000年   638篇
  1999年   553篇
  1998年   350篇
  1997年   351篇
  1996年   386篇
  1995年   359篇
  1994年   317篇
  1993年   321篇
  1992年   501篇
  1991年   465篇
  1990年   492篇
  1989年   482篇
  1988年   398篇
  1987年   450篇
  1986年   431篇
  1985年   459篇
  1984年   398篇
  1983年   361篇
  1982年   322篇
  1981年   280篇
  1980年   273篇
  1979年   423篇
  1978年   336篇
  1977年   268篇
  1976年   260篇
  1975年   234篇
  1974年   241篇
  1971年   246篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
921.
Many studies examine the development of infants born at risk for medical and developmental problems during the early years of life, but far fewer follow these children into their school years. This project compared high-risk vs. low-risk children in their performance on the WPPSI at pre- and postkindergarten levels. In general, both groups of children demonstrated increases in performance; however, their patterns of performance were different. The high-risk children showed increases predominantly in the Performance areas of the test, whereas the low-risk children demonstrated increases predominantly in the Verbal areas.  相似文献   
922.
Recent research related to the design of science instruction is often based on conceptual change theory and requires assessments of what knowledge students bring to instruction. The premise of this study was that it is also important to understand when and how students apply their knowledge. Fourteen elementary and middle school teachers in an in-service physics course were asked to solve qualitatively a variety of series and parallel circuit problems and explicate their reasoning. These teachers were found to share a common core of strongly held propositions that formed a coherent, but incorrect and contradictory model of sequential current flow. Yet their predictions about the circuits were highly variable. The variability in predictions resulted from differences and contradictions in additional “protective belts” of propositions, and differences in the ways in which the teachers changed and selectively applied those propositions to different problems. Understanding the variations in not only what teachers knew, but also the differences in when and how they applied their knowledge complicated the task of designing instruction. However, it also made possible the design of more precise instruction in which the teachers were required to recognize, confront, and reconcile specific inconsistencies in their beliefs.  相似文献   
923.
When a crisis occurs in the school setting, school officials must be prepared to handle the situation effectively and efficiently. One of the ways school officials can handle a crisis situation is through the use of crisis intervention teams. The steps in establishing a crisis intervention team in a school setting include: determining goals, performing a needs assessment, finding model programs, developing a membership pool, developing a training program, preparing and maintaining a list of resources and plans for support services, establishing a communication network, designating a base of operations, planning team meetings, keeping records, and implementing the phases of debriefing. A crisis management scenario is presented and discussed in terms of the steps.  相似文献   
924.
925.
926.
927.
928.
929.
930.
八国集团在国际社会扮演重要的角色.尽管中国现在还不是八国集团成员国,但多种迹象表明,中国与八国集团越走越近.对中国来说,加入八国集团可能只是一个时间问题,必须积极认真地思考和准备加入八国集团这一重要国际机制的一系列问题和工作.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号