二级键加和法估算烃类物质标准熵

本文给出了根据二级键加和法估算烃类物质标准熵的有关公式，并估算了２０１种烃类物质在气态时的Ｓ２９８值，其平均相对误差为０．８５％。     

浅议第二次柏林危机期间西方盟国关系

苏联挑起第二次柏林危机后,西方盟国对之做出了不同反应.西德主张对苏强硬,法国有限支持西德但反对武力对抗,英国始终主张谈判解决危机,美国表面强硬实际却通过谈判以避免危机升级.危机期间西方盟国表面上一致对苏,事实上却龃龉与调适并存,其关系在本质上是一种虚幻的一致与真实的龃龉并存的矛盾关系.     

芝诺悖论和贝克莱悖论新解

在文献[1-10]所介绍工作的基础上,以全新的思路综合分析芝诺悖论家族和贝克莱悖论家族所揭示的问题的本质,得到明确的结论:(1)芝诺悖论家族和贝克莱悖论家族揭示了存在于经典无穷理论体系、经典数谱和经典极限论中人们一直没发现的一个逻辑矛盾及相关基础理论问题;(2)经典无穷理论体系、经典数谱和经典极限论中所存在的重大缺陷决定了这两大悖论家族从不同角度所揭示的所有难题在现有科学理论体系中是不可解的.本文给出了解决芝诺悖论家族和贝克莱悖论家族的新途径.     

论七届二中全会毛泽东关于党的先进性建设思想

在全国胜利的前夜,中国共产党召开了具有伟大历史意义的七届二中全会。毛泽东提出在夺取全国政权后,要经得住执政的考验,“务必使同志们继续地保持谦虚谨慎、不骄不躁的作风,务必使同志们继续地保持艰苦奋斗的作风”。加强和改进党的建设,不断增强党的创造力、凝聚力和战斗力,始终保持和维护党的生机与先进性。     

A Reflection on the Critical Period Hypothesis in Second Language Learning

1.A brief review of the research on children's language acquisitionBehaviorists,e.g.Skinner,believe thatlanguage,like any otherlearned behavior,is learntby aprocess of habit-formation.They see language development as a result of adults' reinforcement andgradual shaping of infants babbling (Gleason,1 993 :1 48) .According to Littlewood(1 984:5 ) ,theprocess may be like this:the child imitates the sounds and patterns which he hears around him;peo-ple recognize the child' s attem pts and reinfor…     

Multidirectional war narratives in history textbooks

This article aims to contribute to the field of textbook research by exploring a new approach in textbook analysis. Inspired by Michael Rothberg’s concept of multidirectional memory, this article examines multidirectional narratives in history textbooks: narratives that combine different histories, places and times in a productive way. They generate new meanings by combining histories and help us understand new, unknown situations by putting them in familiar frames of reference. The study of multidirectional textbook narratives precisely brings to light how authors make sense of the past and how continuity and meaning interact with interpretations of the present and the future. The analysis of multidirectional textbook narratives enables textbook researchers to examine how past experiences and future expectations are organised. To illustrate this, this article examines how textbook authors generated continuity and meaning by establishing narrative links between the past, the present and the future in English history textbooks for 11- to 14-year-old students in the 1920–1960 period. A case study presents the English defeat of the Spanish Armada in 1588: how and why does the narration of the 1588 event interact with the narration of other historical events, and do these interactions change after the Second World War?     

李世贤在二破江南大营战役中的贡献

战场上的李世贤基本上是以李秀成配角的形象出现的.这种“第二提琴手”角色在二破江南大营战役中得到集中体现.本文主要阐述了李世贤在战役中先后协助李秀成完成了向皖南宁国广德和皖浙边界的战术机动,之后主动实施战术大支队战术任务,在湖州机动,迷惑清军判断,配合李秀成奔袭杭州,最后在破围决战前发动常州方向的战略牵制攻势,调动江南大营防御重心,为决战的胜利做出不可磨灭的贡献.     

从权势关系看英汉第二人称代词演变

英汉第二人称代词在其发展变化过程中呈现出一定的相通性和相异性,文章从历史语言学的角度对比英汉第二人称代词演变中的异同,并从社会语言学的角度来解释这些异同.     

个体对母语和第二语言认知差异性分析

个体对母语和第二语言的认知存在差异性,缘于个体抓住了母语语言习得的最关键时期并以极大的信息量早早地占据了大脑言语中枢。输入大脑的语言信息并与脑语言细胞相互作用、相互影响,在大脑构建了母语语言认知构架。当第二语言信息滞后地进入大脑言语中枢时,个体也试图去构建第二语言认知构架,因受母语认知构架的负迁移,构建过程异常艰难。因此,个体运用第二语言时也不能象运用母语那样自然。