一道三角题的隐形误解及正解探究

文[1]中有这样一道例题及解法.例1（文[1]例4）已知sinxcosy=1/2,则cosxsiny的取值范围是（）.A.[-1/2,1/2]B.[-3/2,1/2]C.[-1/2,3/2]D.[-1,1]错解：设cosxsiny=t,sinxcosy＋cosxsiny=sin（x＋y）=1/2＋t,由-1≤     

校长在校本课程开发中的角色引领

基础教育课程改革对课程开发权利进行了适当的调整,实行课程的三级管理制度,课程权利的下放赋予校长一定的课程开发权利,然而,目前的各级各类校长对校本课程开发和实施的引领并不是很成功,存在着各种各样的问题,如校本课程权利下放的缺乏,校长对校本课程开发认识的不到位,校长开发校本课程的专业知识和能力的缺乏,以"应试"为中心的考试评价制度对校本课程的影响等障碍.     

国际金融危机的性质、特征及根源——资本主义各国共产党如何看待当前的这场危机

当前的国际金融危机是资本主义基本矛盾发展的产物,是虚拟资本在新自由主义政策下恶性膨胀的结果.     

浅谈大学英语写作教学

英语写作是英语听、说、读、写教学中的最高阶段,但是当前大学英语写作教学过程中还存在着一些问题.本文对这些问题进行了分析,并提出相应的对策,从而提高学生的写作能力.     

推进农村义务教育发展的对策探讨

受国情制约、区位因素、历史原因和长期以来城乡二元体制等影响,当前推进我国农村义务教育新一轮发展仍面临诸多现实难题。可通过改善投入机制、完善监管机制、培育激励机制、健全保障机制等四项对策来化解这些现实难题,从而全面推进我国农村义务教育健康、均衡、长效、公平地发展。     

农远工程教师培训推进策略研究——以陕西省模式三项目省级骨干教师培训为例

本文根据笔者近年从事陕西省农村中小学现代远程教育工程省级培训项目的实践经验,对陕西省模式三项目的省级培训推进策略进行了阐述,主要就陕西省模式三培训的对象、模式、内容、实施策略和评价与管理方式进行了系统介绍.最后,笔者对目前农远工程实施中存在的问题进行了探索和反思.     

面向汉语认知与功能特征的语法逻辑

本文研究范畴语法的两种扩充,一是从认知特征角度的扩充,将范畴语法扩充为认知特征范畴语法,通过具有完全性的逻辑证明解决了一些不合语言事实的句子判别问题;二是从功能特征角度的扩充,提出逻辑推理的形式和进一步将二者统一的可能性问题.     

Complementary roles of care and behavioral control in classroom management: The self-determination theory perspective

This study examined how classroom management practices—care and behavioral control—were differentially associated with students’ engagement, misbehavior, and satisfaction with school, using a large representative sample of 3196 Grade 9 students from 117 classes in Singapore. Results of hierarchical linear modeling showed differential relations. After controlling for students’ gender and socioeconomic status, both care and behavioral control were positively related to student engagement. Moreover, behavioral control was a significant negative predictor of classroom misbehavior and care was a significant positive predictor of satisfaction with school. Our findings underscore the importance of blending care and behavioral control to achieve multiple goals of classroom management.     

Gastric carcinoma with osteoclast-like giant cells: a case report and review of the literature

Gastric carcinoma with osteoclast-like giant cells (OGCs) is an extremely rare tumor. So far, only six cases have been reported in the literature. Here we report an additional case of this tumor in a Chinese 78-year-old man presented with abdominal pain, vomiting, and hematemesis. Physical examination and gastroscopy revealed a tumor in the gastric antrum. The biopsy and pathological findings indicated a gastric adenocarcinoma with OGCs, which were present in both the tumor and the metastatic lymph nodes. Further immunohistochemical staining indicated that OGCs were reactive with CD68, CD45, and vimentin protein, but not with pancytokeratin, carcinoembryonic antigen, or epithelial membrane antigen, suggesting the monocytic/histiocytic derivation of these OGCs. In situ hybridization for Epstein-Barr virus showed no nuclear positivity in either adenoearcinoma or OGCs. Postoperative follow-up showed that the patient had survived for at least 6 months without recurrence. Further investiga-tion is warranted to clearly define the prognostic significance of OGCs in gastric carcinoma.     

试论校报总编的“总编意识”

要办好校报,必须努力提高办报人的角色意识,着力培养办报人的专业素质和办报理念,使之承担起高校主流媒体的职责。校报要更好地发挥喉舌、桥梁、纽带和舆论导向作用,在读者群中产生理想效应,需要校报总编能以较强的主体意识去担负主导作用。而校报总编要完成新时期总编角色的转换,尤应牢固树立包括责任意识、党性意识、专家意识、创新意识、全局意识、前瞻意识、服务意识、精品意识等八种意识在内的“总编意识”,确立新的认知范式,坚持追求自我培养和不断提升,以增强校报的活力,向办报的更高境界迈进。