Coronavirus disease 2019(COVID-19),the disease caused by infection with se-vere acute respiratory syndrome coron-avirus 2(SARS-CoV-2),has developed into a global pandemic that continues to pose an enormous threat to public health and the global economy.Si
Biodiversity science in China has seen rapid growth over recent decades,ranging from baseline biodiversity studies to understanding the processes behind evolution across dynamic regions such as the Qinghai-Tibetan Plateau.We review research,including spec
当年读满族民俗专家金受申先生《北京话词典》,说是北京言语中对于死亡的说法有几十种.联想一下,还真不少.包括死了、去了、没了、踹了、蹬了、嗝儿了、老了、走了、听蛐蛐叫去了、听喇喇蛄叫去了、吹灯拔蜡了、伸腿瞪眼了、闭眼了、升天了、驾鹤西去了、仙逝、寿终正寝、辞世、去世、逝世、离世、告别、驾崩种种.而最不正经的说法是“嗝儿屁、嗝儿屁着凉、嗝儿屁朝梁、嗝儿屁着凉大海棠”系列.还有的地方具体解释为,人临死会打冷嗝儿,放热屁,浑身凉,仰面朝向房梁等等.
王蒙文 康笑宇圖 文学产生于劳动，这是马克思主义的文学发生学。此外，产生于性欲、产生于宗教、产生于社交……也都言之成理。 而一说到文学的产生，我首先会想到母亲临睡前给孩子讲故事。我捉摸，小儿对沉入黑夜的睡眠不无恐惧，妈妈的故事具有一种温暖和保护性，鼓励小儿对于陌生世界的亲近感。 一次在新加坡，谈到此话题，主人叹息：“现在没有这种温馨了，中产阶级家里的小儿，都是由菲佣带着入睡。” 失去给孩子
Mineral dust can indirectly affect the climate by supplying bioavailable iron(Fe)to the ocean.Here,we present the records of dissolved Fe(DFe)and total Fe(TDFe)in North Greenland Eemian Ice Drilling(NEEM)ice core over the past 110 kyr BP.The Fe records ar
Developing photovoltaic materials with simple chemical structures and easy synthesis still remains a major challenge in the industrialization process of organic solar cells(OSCs).Herein,an ester substituted poly(thiophene vinylene)derivative,PTVT-T,was de
新课程改革要求教师“深化课堂改革、落实以人为本”,培养学生“地理核心素养”.基于这一要求,笔者围绕新课程理念下如何运用思维导图组织和开展高中地理教学提出了几点可行性建议.
Unveiling the structural evolution and working mechanism of catalysts under realistic operating conditions is crucial for the design of efficient electrocatalysts for CO2 electroreduction,yet remains highly challenging.Here,by virtue of operando structura
在高中英语教学中,教师要让教学重心由“教”向“学”转移,要激发学生的自主潜能,培养学生的自主学习能力.本文主要从构建微课环境、运用多元方法以及科学划分层次等角度阐述高中英语教学中学生自主学习能力培养的有效策略.