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   9095篇
  免费   282篇
各国政治   462篇
工人农民   413篇
世界政治   527篇
外交国际关系   278篇
法律   5745篇
中国共产党   3篇
中国政治   57篇
政治理论   1812篇
综合类   80篇
  2020年   110篇
  2019年   145篇
  2018年   204篇
  2017年   225篇
  2016年   225篇
  2015年   154篇
  2014年   156篇
  2013年   1021篇
  2012年   236篇
  2011年   230篇
  2010年   196篇
  2009年   222篇
  2008年   272篇
  2007年   232篇
  2006年   262篇
  2005年   239篇
  2004年   240篇
  2003年   214篇
  2002年   220篇
  2001年   269篇
  2000年   272篇
  1999年   196篇
  1998年   126篇
  1997年   125篇
  1996年   115篇
  1995年   104篇
  1994年   99篇
  1993年   118篇
  1992年   190篇
  1991年   208篇
  1990年   184篇
  1989年   184篇
  1988年   167篇
  1987年   183篇
  1986年   181篇
  1985年   165篇
  1984年   159篇
  1983年   168篇
  1982年   97篇
  1981年   93篇
  1980年   79篇
  1979年   109篇
  1978年   79篇
  1977年   77篇
  1976年   61篇
  1975年   62篇
  1974年   67篇
  1973年   76篇
  1972年   63篇
  1968年   53篇
排序方式: 共有9377条查询结果,搜索用时 15 毫秒
121.
122.
In the summer of 1984, police in Pinellas County, Florida, confiscated six identically colored imported Asian skulls (in a shipping case) from a private citizen. In May 1988, in nearby Hillsborough County, police confiscated a very similar skull from another private citizen, who allegedly had found it in an abandoned house. Aside from slight color differences between the six found in Pinellas County and the one found in Hillsborough County, the skulls are virtually identical in their osteological characteristics and condition and in the vital statistics derived from each. Each skull is as clean and dry as those typically sold by commercial scientific supply outlets in the United States. Each is edentulous (primarily premortem), between approximately 20 and 60 years of age at death, and morphologically Asian. Five of the seven are morphologically male, one is morphologically female, and one is a mosaic with respect to gender-related features. Police, medical examiners, coroners, and forensic anthropologists should be aware of such "souvenir" specimens, in the event that they encounter similar skulls. Discriminant function analyses for race and sex yield considerably conflicting results, which underscores the need for using extreme caution when interpreting forensic science estimates based on such techniques.  相似文献   
123.
Two infants aged 4 1/2 and 8 months are reported to have been exposed to overheating by an electric blanket and a heating fan in bed for a period of up to approx. 19 hours. Dehydration complicated the effects of overheating. Due to the case history in combination with the autopsy and histological findings as well as the absence of toxicological findings the following diagnosis could be established: "Death from exhaustion as a consequence of long-lasting heat effect and dehydration." The necessity of thorough investigations in causes of death during infancy is shown by means of the two cases above. If possible, the rectal temperature should already be taken by the coroner. The public should get informed about the risks caused by the use of electric cushions, heating fans as well as floorboard heating.  相似文献   
124.
The authors reviewed at autopsy the causes of death of 274 patients with evidence of intravenous drug abuse who had been admitted to a large public hospital. There were 127 who died from diseases unrelated to intravenous drug abuse, and in 41% of these, chronic alcoholism was implicated. Deaths from overdose syndromes and drug-related organ pathology comprised only 11% of all cases. The mean age at death was 39 years. There was a male/female ratio of 3.6:1. Half of all patients died from infection--72 from acquired immunodeficiency syndrome (AIDS) alone. These findings indicate that persons hospitalized with a history of intravenous drug abuse usually die from causes other than overdose and that AIDS and chronic alcoholism are significant problems. Emphasis should be placed upon detecting "hidden" intravenous drug deaths to provide more accurate statistical information.  相似文献   
125.
126.
127.
128.
129.
The welfare state is often accused of being counterproductive: as the scope of public responsibility expands, private morality (especially altruism and benevolence) atrophies. This essay surveys psychological findings for evidence, which turns out to be broadly consistent with either of two models of moral development, each bearing distinct policy implications. The model of morally keeping in practice that is implicit in the term moral atrophy suggests the need for frequent opportunities to exercise moral skills, which would seem inconsistent with the welfare state. Alternatively, the model of moral character-building favoured by both philosophers and ordinary discourse would require only occasional reminders of one's moral principles. On this model, benevolence could usefully supplement the welfare state.  相似文献   
130.
Clift E  Cohn B 《Newsweek》1993,122(19):40-41
  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