suggestion

摘要： 1.Introduction.Language is a tool for human interaction,which begins with speaking.It can be seen that oral language plays a very crucial role in communication.Naturally,the ultimate goal of learning a language is to acquire the ability of communicating.To be more specific,language is used to achieve a certain communicative purpose,such as request,suggestion,advice,invitation,order,hope,complaint,consent,rejection and so on.All of these are communicative functions of a language,which are all related to speaking.However,for English classes of junior high school in China,speaking is usually considered to be a difficult skill to be taught in a second language because of its complexity.

摘要： The so-called thinking set is a stable standard thinking set not only allowing us to figure out the politics of the whole situation and then settle the matter,yet also hindering us from employing a new method which is far more practical when the surrounding are changed.This is espcially typical in translation practise,espcially on“Word-to-Word”translation method.In this essay,some exampls will be picked and analyzed.After the analysis,some suggestion will be provided to avoid the similar problems in future.

摘要： On January 3,2019,the first lunar farside in-situ exploration mission,China’s Chang’e 4(CE-4),successfully landed in Von Karman crater within the South Pole-Aitken(SPA)basin.The CE-4 mission provided a host platform and opened its science payload resources to the international community.Science payloads from Germany,Sweden,the Netherlands and Kingdom of Saudi Arabia were aboard CE-4.It has explored effective models of international cooperation,accumulated cooperation experience,and provided a reference for the implementation of broader and deeper cooperation in major projects.This paper summarizes the practical experience of international cooperation on CE-4,analyzes the difficulties and existing problems of science payloads management,explains the current management methods,and puts forward suggestions for the development of broader international cooperation for the future.

摘要： The flipped learning model, which “flips” traditional in-class lectures with cooperative activities, has obtained lots of followers and backers in education. Usually teachers have a negative attitude toward flipped model. Teachers have their stance, and flipped model is still in the exploration stage in vocational education context at present. Studies and design models for flipped learning in secondary vocational education are insufficient. However, flipped classroom is an educational tool which may benefit students. This paper attempts to provide a foundation for further research and implementation for flipped learning in secondary vocational education. It was found that there is no quick answer to the question whether the flipped classroom should and can be introduced to secondary vocational schools or not, but teachers should implement flipped classroom positively.

摘要： The paper introduces the developmentcourse of rail transit equipment cooling technology athome and abroad, compares and analyzes the coolingmodes, and proposes the suggestion for technologyresearch and product development of cooling system.

摘要： The purpose of this paper is to study the air pollutants in Xiong’an New Area based on MATLAB grey model [1]. From 2011 to 2016, the results of sulfur dioxide (SO2), nitrogen dioxide (NO2) and inhalable particulate matter (PM1O) detected at monitoring points in the three counties of Xiong’an were analyzed. According to the national environmental air quality standard [2], the air quality in Xiong’an New Area was reasonably evaluated based on grey model in MATLAB. Judging from the weight of pollution factors in the model, sulfur dioxide (SO2) is the controlling factor of air quality in Xiong’an New Area, and the weight of nitrogen dioxide (NO2) gradually increases. The main sources of the three pollutants were obtained by comprehensive data analysis, and a grey model was established according to the mass concentration of the main air pollutants, and the grey forecasting model was tested. The experimental results show that the model can be effectively applied to the forecasting of ambient air quality. On this basis, the present situation of atmospheric environmental quality in Xiong’an New Area and suggestions for improvement are obtained.

摘要： In order to carry forward the culture of the viewing stone and spread the new conceptions of stone appreciation as well as promote the viewing stone’s undertakings and industry,Response to the suggestion of the majority of viewing stone lovers,Viewing Stone Association of China propose to establish the"National Viewing Stone’s Day".After hear to the solicit opinions from all sides,August30th becomes the"National viewing stone’s Day"every year.

摘要： 英语中的语气分为分为四种:陈述语气、疑问语气、祈使语气和虚拟语气。在这四种语气中,虚拟语气属于特殊的语气,主要用来表示一种非真实的假设。其实,要想拿下高考虚拟语气这一块的分数并不难,只需要把其中的要点弄懂并记牢即可轻松应对。但是近年来试题特别强调语境(context),即考生必须仔细审题分析,理清上下文。此种结合语境分析答题的语法能力是考生必须得具备的。虚拟语气考点如下:1.if非真实条件句的三种基本类型&错综时间