小学生诗词楹联经典诵读开展方式的探究

诗词楹联是传统文化中的重要组成部分,读起来朗朗上口。诗词的历史非常悠久,从商周时期的《诗经》到唐诗宋词再到近代诗词,留给学生的是丰富的文化遗产。而楹联的历史也非常悠久,广义的楹联可以追溯到《诗经》时期,因为诗经中有很多对仗的语句,例如“昔我往矣,杨柳依依;今我来思,雨雪霏霏”等。狭义的楹联从五代后蜀主孟昶开始就已经非常普遍了。而到了明清时期,对对联的风俗非常盛行,对对联成为文人士大夫们重要的娱乐方式。可以说,诗词和楹联以其短小精悍的特点成为了古代流传最广的文学形式之一。因此,小学阶段朗诵诗词楹联是对传统文化的有力传承和发扬。     

浅谈翻译教学在英语课堂中的应用

英语新课程标准提出要突出语言的实践性,强调语言技能的重要地位,翻译是一种综合运用语言技能的重要表现。当前我国英语教学对学生翻译技能的培养重视度较弱,本文分析了当前英语课堂中学生翻译水平的现状,并进一步提出将翻译教学应用于英语课堂中,提高学生的语用能力和语言技能。     

Experiments on Cu-isotope fractionation between chlorine-bearing fluid and silicate magma: implications for fluid exsolution and porphyry Cu deposits

Hydrothermal fluid is essential for transporting metals in the crust and mantle. To explore the potential of Cu isotopes as a tracer of hydrothermal-fluid activity, Cu-isotope fractionation factors between Cl-bearing aqueous fluids and silicate magmas (andesite, dacite, rhyolite dacite, rhyolite and haplogranite) were experimentally calibrated. Fluids containing 1.75–14 wt.% Cl were mixed together with rock powders in Au₉₅Cu₅ alloy capsules, which were equilibrated in cold-seal pressure vessels for 5–13 days at 800–850°C and 2 kbar. The elemental and Cu-isotopic compositions of the recovered aqueous fluid and solid phases were analyzed by (LA-) ICP–MS and multi-collector inductively coupled plasma mass spectrometry, respectively. Our experimental results show that the fluid phases are consistently enriched in heavy Cu isotope (⁶⁵Cu) relative to the coexisting silicates. The Cu-isotope fractionation factor (Δ⁶⁵Cu_FLUID-MELT) ranges from 0.08 ± 0.01‰ to 0.69 ± 0.02‰. The experimental results show that the Cu-isotopic fractionation factors between aqueous fluids and silicates strongly depend on the Cu speciation in the fluids (e.g. CuCl(H₂O), CuCl₂^– and CuCl₃²⁻) and silicate melts (CuO_1/2), suggesting that the exsolved fluids may have higher δ⁶⁵Cu than the residual magmas. Our results suggest the elevated δ⁶⁵Cu values in Cu-enriched rocks could be produced by addition of aqueous fluids exsolved from magmas. Together with previous studies on Cu isotopes in the brine and vapor phases of porphyry deposits, our results are helpful for better understanding Cu-mineralization processes.     

税法与会计制度差异成因分析

众所周知,目前我国税法和会计制度有一定的差异,有的甚至相冲突。特别是新《企业会计准则》颁布以后,从某种程度上说,这种差距正在日益扩大,使得企业不得不增加成本去进行纳税调整。这种差异所导致的成本是否应该一定由企业来承担呢?国家对于两种制度的协调是否有原则性的指导方向等等,这些问题的解决都需要从两者最基本的原则谈起,本文将以世界主要国家模式选择为背景,立足于我国实践,以历史发展为线索,从原则层面分析两者产生的原因。     

银镜反应中若干问题的探讨

概述 银镜反应是高二化学教材中一个典型的演示实验,此实验是有机化学中鉴别醛和酮、还原糖和非还原糖、甲酸同其它羧酸的一种有效手段。下面将对银镜反应实验中需注意的一些问题列举出来并进行探讨。     

加强责任教育注重方法创新

方法僵化、内容空泛、实效性差是目前我国大学生责任教育面临的三个突出问题,而对大学生责任教育的内容体系构建及实施方式的研究等则是百家争鸣。本文从大学生德育教育的方法研究入手,探索增强大学生责任教育实效性的方法,丰富大学生责任教育的理论研究。     

论审判公开与人民法院审判机制改革

审判公开是我国司法审判中的一项基本制度,但在审判实践中与审判公开相悖的现象仍然存在,尤其是目前的法院审判机制已成为制约审判公开落实的瓶颈。因此,必须实现审判权的归位,建立运行合理的审判工作机制。     

Replication,pathogenicity, and transmission of SARS-CoV-2 in minks

Minks are raised in many countries and have transmitted severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to humans. However, the biologic properties of SARS-CoV-2 in minks are largely unknown. Here, we investigated and found that SARS-CoV-2 replicates efficiently in both the upper and lower respiratory tracts, and transmits efficiently in minks via respiratory droplets; pulmonary lesions caused by SARS-CoV-2 in minks are similar to those seen in humans with COVID-19. We further found that a spike protein-based subunit vaccine largely prevented SARS-CoV-2 replication and lung damage caused by SARS-CoV-2 infection in minks. Our study indicates that minks are a useful animal model for evaluating the efficacy of drugs or vaccines against COVID-19 and that vaccination is a potential strategy to prevent minks from transmitting SARS-CoV-2.     

收藏：文化的传承——读《收藏大家》

《收藏大家》是郑重先生的新作,2007年上海书店出版社出版。     

科学主义与启蒙的两条出路

启蒙带来了现代性,而现代性在当代的表现形式就是科学主义,因此,为了消除科学主义的影响,只有回到启蒙本身,从启蒙内在具有的价值理性与批判精神这两条出路才能找到解决问题的措施。