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   12353篇
  免费   172篇
  国内免费   19篇
教育   8372篇
科学研究   1405篇
各国文化   363篇
体育   1049篇
综合类   9篇
文化理论   117篇
信息传播   1229篇
  2022年   100篇
  2021年   167篇
  2020年   238篇
  2019年   379篇
  2018年   445篇
  2017年   480篇
  2016年   404篇
  2015年   278篇
  2014年   304篇
  2013年   2234篇
  2012年   291篇
  2011年   288篇
  2010年   261篇
  2009年   237篇
  2008年   287篇
  2007年   274篇
  2006年   234篇
  2005年   217篇
  2004年   213篇
  2003年   166篇
  2002年   144篇
  2001年   187篇
  2000年   212篇
  1999年   195篇
  1998年   99篇
  1997年   98篇
  1996年   96篇
  1995年   87篇
  1994年   83篇
  1993年   93篇
  1992年   153篇
  1991年   167篇
  1990年   168篇
  1989年   163篇
  1988年   125篇
  1987年   133篇
  1986年   131篇
  1985年   178篇
  1984年   140篇
  1983年   131篇
  1982年   110篇
  1981年   88篇
  1980年   100篇
  1979年   150篇
  1978年   101篇
  1977年   98篇
  1976年   84篇
  1975年   88篇
  1974年   94篇
  1973年   90篇
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
11.
12.
Duchenne Muscular Dystrophy (DMD) is a neurogenetic developmental disorder that presents with progressive muscular weakness. It is caused by a mutation in a gene that results in the absence of specific products that normally localize to muscle cells and the central nervous system (CNS). The majority of affected individuals have IQs within the normal range, generally with lower verbal than performance IQ scores. Prior work has demonstrated selective deficits on tests of verbal span and immediate memory. For the current study, 26 boys with DMD (and normal intellectual function) and their unaffected siblings were evaluated. Paired comparisons demonstrated that the children with DMD had significantly poorer academic achievement scores than their siblings, even though their vocabulary levels and home and educational environments were comparable. Children with DMD also had more behavioral concerns, physical disabilities, and poorer verbal memory spans. Linear regression indicated that behavioral concerns, executive function, and physical disability did not contribute substantially to academic performance, whereas performance on verbal span did. DMD presents with a selective developmental aberration in verbal span that has wide‐ranging consequences on learning skills.  相似文献   
13.
14.
15.
Three factors tied with secondary student success in content‐area reading are demonstrated: (a) validated teacher‐focused and student‐focused interventions, (b) integrated and comprehensive service delivery systems, and (c) well‐designed, data‐based professional developmental programs. Difficult challenges face secondary students with LD and their teachers with regard to these students’ participation and success in required general education classes. Recently, instructional methods and materials have been developed and validated for promoting these students’ success. Some of them focus on how general education teachers plan and teach their content‐area courses; others focus on giving students the strategies they need to respond independently to the demands of their courses. This article describes these instructional methods, a service‐delivery model for implementing these interventions in secondary schools, and professional‐development mechanisms and administrative support that must be in place for the model to be maintained effectively.  相似文献   
16.
A small nation in the middle of the North Atlantic, Iceland currently has a population of 265,000 (1996). The Iceland language has changed very little since the island was settled some 11 centuries ago. Despite the relatively small number of people who speak the language and irrespective of the globalisation efforts by the international community, which includes the ever-increasing influence of English worldwide, the Icelandic language and culture are stronger than ever. The current volume and variety of publications of Icelandic works in all areas have never been as great. Icelandic is a living and growing language. Growth in vocabulary, in response to recent phenomena like the introduction of new technology, has primarily come about with the development of new words from the language's roots. The near absence of Latin, Greek and, more recently, English or Danish words in Icelandic, is striking. Iceland's language policy is not only a governmental policy. It is a policy that comes from the grassroots with the government and official institutions viewing their job as one of service to the people of Iceland. Icelanders are very proud of their language and are extremely determined to continually develop and preserve it for future generations.  相似文献   
17.
18.
19.
20.
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