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   188956篇
  免费   8393篇
  国内免费   155篇
  197504篇
  2020年   2796篇
  2019年   3459篇
  2018年   3688篇
  2017年   4132篇
  2016年   4737篇
  2015年   3949篇
  2014年   4828篇
  2013年   23525篇
  2012年   5039篇
  2011年   4357篇
  2010年   4121篇
  2009年   4875篇
  2008年   4473篇
  2007年   4118篇
  2006年   4533篇
  2005年   4439篇
  2004年   3913篇
  2003年   3508篇
  2002年   3360篇
  2001年   4051篇
  2000年   3920篇
  1999年   3662篇
  1998年   2895篇
  1997年   2728篇
  1996年   2648篇
  1995年   2460篇
  1994年   2420篇
  1993年   2389篇
  1992年   3046篇
  1991年   2851篇
  1990年   2697篇
  1989年   2557篇
  1988年   2540篇
  1987年   2524篇
  1986年   2570篇
  1985年   2765篇
  1984年   2751篇
  1983年   2504篇
  1982年   2455篇
  1981年   2423篇
  1980年   2253篇
  1979年   2535篇
  1978年   2336篇
  1977年   2247篇
  1976年   2055篇
  1975年   2237篇
  1974年   2318篇
  1973年   2246篇
  1972年   1830篇
  1971年   1724篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
191.
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   
192.
193.
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   
194.
195.
196.
197.
198.
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   
199.
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   
200.
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