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   180304篇
  免费   8038篇
  国内免费   156篇
  188498篇
  2020年   2798篇
  2019年   3454篇
  2018年   3545篇
  2017年   3997篇
  2016年   4647篇
  2015年   3939篇
  2014年   4822篇
  2013年   23513篇
  2012年   4722篇
  2011年   3790篇
  2010年   3908篇
  2009年   4795篇
  2008年   4026篇
  2007年   3550篇
  2006年   4123篇
  2005年   4117篇
  2004年   3592篇
  2003年   3221篇
  2002年   3024篇
  2001年   3566篇
  2000年   3421篇
  1999年   3322篇
  1998年   2852篇
  1997年   2685篇
  1996年   2614篇
  1995年   2440篇
  1994年   2401篇
  1993年   2369篇
  1992年   2820篇
  1991年   2654篇
  1990年   2531篇
  1989年   2388篇
  1988年   2356篇
  1987年   2391篇
  1986年   2376篇
  1985年   2640篇
  1984年   2650篇
  1983年   2427篇
  1982年   2407篇
  1981年   2386篇
  1980年   2207篇
  1979年   2370篇
  1978年   2241篇
  1977年   2201篇
  1976年   2023篇
  1975年   2173篇
  1974年   2251篇
  1973年   2169篇
  1972年   1743篇
  1971年   1669篇
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
191.
Book reviews     
  相似文献   
192.
Book reviews     
TOATES, F. Animal Behaviour: A Systems Approach. Chichester: John Wiley and Sons. 1980. Pp. 299. Hardback £17. Paper back £6.40 ISBN 0 471 27724.

DICKINSON, A. Contemporary Animal Learning Theory. Cambridge: University Press. 1980. Pp. 177. Hardback £12.50. Paperback £3.95. ISBN 0 521 23469 7.  相似文献   
193.
194.
Despite this virtue's history as an instrument of women's oppression, modesty, at its most basic, means voluntary restraint of one's power, undertaken for the sake of others. It is a mechanism that modifies unequal power relationships and encourages greater compassion and fairness. I use a Christian perspective with influences from Jewish and Muslim sources to examine modesty. The modest person, I argue, must be in relationship with others, must be honestly aware of her impacts on others, must be sensitive to those impacts, compassionate toward others, and willing to hold back for others' sakes. Moreover, modesty is not only a virtue that pertains to sexuality and clothing, but it also can promote virtuous environmental behavior, particularly as it leads to awareness of, and sensitivity to, the effects of everyday behaviors on vulnerable others.  相似文献   
195.
196.
197.
198.
199.
Recent studies demonstrating that multiple meanings of an ambiguous word are initially accessed even when only one reading is syntactically appropriate with the preceding context can be criticized on at least two grounds. First, many of the syntactic contexts used were not truly restrictive, and, secondly, subjects may not have had time to integrate the context before processing the ambiguous word. In the present study, subjects listened to a sentence ending in an ambiguous word and then made a lexical decision to a target related to either the appropriate or inappropriate reading. Contexts were completely restrictive, and a pause was introduced between the context and the ambiguous word. Multiple access still obtained, providing further support for the claim that lexical access is not guided by syntactic context.  相似文献   
200.
Suicides among older adults in the United States and Canada in the last decade have accounted for an increasing share of all suicides. In both countries the use of firearms among older adults has steadily increased. Despite these trends, little is known about the extent to which crisis centers are prepared to prevent elder suicide. A survey of AAS-listed crisis prevention centers examined the training, knowledge, and current practices relevant to elder suicide among personnel in 321 crisis prevention centers in both countries. Results revealed insufficient training, a lack of familiarity with recent suicide trends, and limited outreach to older adults.  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