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   11700篇
  免费   607篇
各国政治   586篇
工人农民   396篇
世界政治   790篇
外交国际关系   353篇
法律   7839篇
中国共产党   1篇
中国政治   72篇
政治理论   2203篇
综合类   67篇
  2023年   175篇
  2021年   85篇
  2020年   202篇
  2019年   219篇
  2018年   254篇
  2017年   304篇
  2016年   296篇
  2015年   280篇
  2014年   255篇
  2013年   1217篇
  2012年   278篇
  2011年   285篇
  2010年   303篇
  2009年   314篇
  2008年   288篇
  2007年   281篇
  2006年   290篇
  2005年   277篇
  2004年   289篇
  2003年   261篇
  2002年   240篇
  2001年   458篇
  2000年   398篇
  1999年   338篇
  1998年   163篇
  1997年   116篇
  1996年   109篇
  1995年   133篇
  1994年   136篇
  1993年   132篇
  1992年   234篇
  1991年   236篇
  1990年   237篇
  1989年   234篇
  1988年   198篇
  1987年   211篇
  1986年   217篇
  1985年   231篇
  1984年   177篇
  1983年   192篇
  1982年   130篇
  1981年   123篇
  1980年   98篇
  1979年   151篇
  1978年   121篇
  1977年   89篇
  1975年   92篇
  1974年   113篇
  1973年   107篇
  1972年   85篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
Clift E  Cohn B 《Newsweek》1993,122(19):40-41
  相似文献   
142.
143.
The purpose of this study was to examine in a sample of 11,516 secondary school students the extent to which different behavioral, emotional and cognitive problems (a) reflected one or more underlying common factors; (b) actually cooccurred; and (c) were single problems. Principal Component Analyses were performed and percentagewise techniques were used. PCA demonstrated that one or more general syndromes could not by far account for all of the variance of the variables. The results suggest the existence of adolescent subgroups with divergent comorbidity patterns: those who primarily report one single symptom; those who report concurrent symptoms either exclusively in the category of behavioral problems or exclusively in the category of emotional and cognitive problems; and those who report concurrent symptoms in both categories. This distinction between different subgroups has important theoretical, diagnostic, and treatment implications.  相似文献   
144.
145.
Negotiating on-line is becoming an increasingly common phenomenon in the workplace. The medium of the Internet also offers promising, opportunities for negotiation educators to reach out to participants that might otherwise be unable to attend a seminar. The authors used the Internet to teach negotiation theory and skills during a seven-week seminar that was conducted completely over the World Wide Web. This experiment revealed several advantages and difficulties likely to arise in the conduct of distance learning for topics in negotiation. The authors reflect on how they would organize the seminar differently, should they do it again, and offer suggestions for others organizing courses using the Internet.  相似文献   
146.
Gin BR 《Columbia law review》1997,97(5):1406-1434
This Note discusses the potential for genetic discrimination, current views as to whether genetic conditions will be covered by the Americans with Disabilities Act ("ADA"), and the specific issue of whether presymptomatic persons who test positive for Huntington's disease should be classified as persons with a "disability" within the meaning of the ADA. In considering whether presymptomatic Huntington's individuals have a disability under the ADA, an analogy is made between Huntington's disease and HIV-positive status. Inter alia, Huntington's disease and HIV-positive status are analogous in that, at the time of diagnosis, victims of both diseases may have no symptoms and may remain healthy for a number of years; but even though the exact time of onset of both diseases is unascertainable, death of both victims within a given range of years is highly likely. Further, both Huntington's disease and HIV are transmitted to offspring at a relatively high rate. Given these similarities, the author argues that Huntington's individuals should be afforded the protections of the ADA for the same reasons that HIV-positive persons are protected.  相似文献   
147.
148.
149.
150.
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