二完型填空How much do you know about manners（礼仪）?Different countries have (41) manners.In (42) Asian countries,it is good manners to take off your (43) before you go into a house.(44) in European (欧洲)countries,even if they sometimes become very dirty,this is not _百度作业帮
二完型填空How much do you know about manners（礼仪）?Different countries have (41) manners.In (42) Asian countries,it is good manners to take off your (43) before you go into a house.(44) in European (欧洲)countries,even if they sometimes become very dirty,this is not done.If you are a (45) in a Chinese house,when you have a meal,you usually do not (46) the food.You often leave a little to (47) that you have had enough.But in England,a visitor always finishes food to show that he has (48) it.We must know the customs (风俗) of other (49),so that they will not think (50)bad-mannered.People all over the world (51) that a well-mannered person should be kind and (52) to others.If you (53) this,at least you will not go very far wrong.(54) likes a person with good manners,but no one likes a person with bad manners.(55) your manners.41.A.same B.different C.some D.interesting42.A.some B.any C.other D.few43.A.bags B.shoes C.coats D.hats44.A.And B.So C.But D.Or45.A.stranger B.traveller C.visitor D.foreigner46.A.need B.finish C.choose D.have47.A.say B.see C.understand D.show48.A.finished B.enjoyed C.taken D.drunk49.A.countries B.villages C.cities D.places50.A.them B.me C.us D.him51.A.find B.know C.guess D.agree52.A.careful B.helpful C.hardworking D.healthy53.A.forget B.remember C.learn D.study54.A.Somebody B.Anybody C.Nobody D.Everybody55.A.Take B.Make C.Mind D.KeepTom's friend spoke to the policeman and agreed with Tom.56.How many people are mentioned (提到) in the story?A.Three.B.Four.C.Five.D.Six.57 .The truck was hit on the way ___________ .A.to the airport B.to the police station C.to Newton D.home58.From the story,we know _________didn't tell the truth.A.the truck driver B.Tom C.the taxi driver D.Tom's friend59.In fact,Tom's friend was also a _____________ .A.witness B.driver C.policeman D.cleaner60.What's the best title for this passage?A.A Taxi Driver B.A Traffic AccidentC.A Story of Tom D.A Truck Driver
B A B C C BDBAC DBBDC后面的不能做啊,没有原文一道初二英语题。急！坐等答案！_百度知道
一道初二英语题。急！坐等答案！
flying B; flying
C. was like? A. looked likeThe noise ___the sound of a plane ___ me. . flying D. above me
我想知道后面为神马用flying、同志们。？急用啊，咱现在就要正确答案，麻烦快点可以告诉为神马么！
提问者采纳
这个句子的意思是。。。D. B and C sound
like 听起来像。be like 像。：这噪音就像（或听起来像）是有飞机在我头顶的声音
提问者评价
很及时。如果可以告诉我后面那个空的原因会更好、3Q
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其他1条回答
因为声音是听的，所以A不对be动词和感官动词加like都可以解释为像为什么就没看到过D这样的选项的选择题……
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初二物理估测大气压
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初二物理估测大气压国语版/初中物理估测/急~~~一道初二物理题,在线等
初二物理题在用图8-29所示的方法估测大气压的实验中，如果测得注射器活塞直径d=24mm，活塞质量m1=38g，悬挂钩码的质量m2=4450g，则实验中测得的大气压为多少？在用图8-29所示的方法估测大气压的实验中,如果测得注射器活塞直径d=24mm 初二物理题 快!!! 几道初二物理题
初二物理两题(第九章 机械与人) 初中物理大气压强用水银柱测量大气压强的时候为什么倾斜水银柱水银柱仍然保持同一个水平高度在托里拆利实验中，管外水银液面所受的大气压强和管内同一水平位置所受的水银的压强相等，大气压强不变，液体的压强P=ρgh只和它的垂直深度有关，而和它的长度无关，因此水银柱的高度不变初二物理大气压强和浮力怎么复习急用
快点压强 ⒈压强P：物体单位面积上受到的压力叫做压强。 压力F：垂直作用在物体表面上的力，单位：牛（N）。 压力产生的效果用压强大小表示，跟压力大小、受力面积大小有关。 压强单位：牛/米2；专门名称：帕斯初二物理题小虎同学利用注射器(容积为V)、弹簧测力计和刻度尺估测大气压的值.
(1)实验时，首先把注射器的活塞推至注射器筒的底端，用橡皮帽封住注射器的小孔这样做的目的是
如图所示，水平向右慢慢拉动注射器筒，当注射器的活塞开始滑动时，
为什么要在刚开始滑动时记录（一）目的是：避免空气进入注射器里面。达到测量的目的。（二）慢慢拉动注射器筒，注射器中的活塞受到向左的拉力和受到向右的大气压产生的力。说明拉力等于大气压所产生的力。因而可以测出大气压。（空气托起活塞的初二物理:注射器筒测量大气压值的问题实验步骤:
1.用细绳将注射器的一端扎住。
2.然后用弹簧测力计的拉勾拉住细绳,用手将注射用针筒的出口处堵住,使弹簧侧力计和针筒都竖直向上另一只手竖直向上拉弹簧测力计,（减少弹簧测力计本身重力的影响）向外拉出并使活塞静止于某一位置，读出示数F，量出此时活塞拉出的长度L。
3.读出拉出的长度L和针筒本身的刻度V（之所以不测直径是因为要测的是内直径，误差大）。
所需物理量F，L，V。
计算式:大气压P0=F/(V/L)=FL/V。
在上述实验过程中,正确使用了测量仪器且读数正确,但测量结果总偏小,是因为针筒的活塞处漏气，使得有空气进入针管，这样就有空气对活塞向外的压强了，所以测量值偏小。那么问：
如何才能减小针筒漏气呢？谢谢~ 为什么可用注射器筒估测大气压值 7
用注射器测查看同主题问题: 初二物理 注射器 大气压 测量 分享到: 普通登录 手机登录用注射器测量大气压强的原理是什么?初二物理，大气压强，是去了针头，包上橡胶皮带，连接弹簧测力计物体在平状态时受到平力作用。以注射器活塞为研究对象，受到的大气压力与弹簧秤的拉力是一对平力，由弹簧秤的读数可知活塞受到的大气压力。再由注射器的有刻度的容积和长度计算出活塞的受力面积。由压强=压力初二物理题小虎同学利用注射器(容积为V)、弹簧测力计和刻度尺估测大气压的值.
(1)实验时，首先把注射器的活塞推至注射器筒的底端，用橡皮帽封住注射器的小孔这样做的目的是
如图所示，水平向右慢慢拉动注射器筒，当注射器的活塞开始滑动时，
为什么要在刚开始滑动时记录（一）目的是：避免空气进入注射器里面。达到测量的目的。（二）慢慢拉动注射器筒，注射器中的活塞受到向左的拉力和受到向右的大气压产生的力。说明拉力等于大气压所产生的力。因而可以测出大气压。（空气托起活塞的初中物理大气压帮我看看我的理解对不？
(托里拆里实验）因为Hg的密度大，所以试管内的水银压强大，又因为空气里的压强小，所以水银就被挤出来了，所以试管内水银的高度只有760mm。
但是我有一个问题，当试管里装满水时，压强小于大气压，所以里面的水不会出来。但是如果试管内只装了一半的水，将试管倒放置水中时，外面的压强大于试管内的压强，为什么水槽中的水不会进入试管呢？装一半的水 则另一半是空气 而这部分空气与试管外面的空气气压是相等的 并不会因为它体积小气压就低 同环境下气体的气压与体积是没有关系的 所以水不会流入试管 补充题选 A 因为胸廓扩大时 胸腔气压变低了初二物理估测大气压题目 在估测大气压的实验中,如果测得注射器活塞直径d=24mm,活塞质量m1=38求详细解答！！！！把题目写清楚呀.初二物理的实验题帮帮忙12、小明所设计的“估测大气压的值”的实验方案如下:①把注射器的活塞推至
初二物理试题及答案 -08-25 10道初二物理实验
《大气压强》微课（研究课，初二物理，通州区第六中学：张国强）
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全国初二学员
1、决胜中考，初二定成败
1）初二下学期进度快：为了给初三留出足够的时间复习备考，一般学校都是从初二下学期开始加速课本进度，保证能够在初三寒假学完所有知识，留下近半年的时间进行综合复习，所以在春季做好万全的准备才能让学员在之后的学习中保持优势，避免两极分化；
2）初二下学期难度大：上半学期的声光热部分大多以感性的知识为主，学生只要凭感觉做题也能做对大部分；但力学主要以理性知识为主，感觉在力学就不再靠谱了，而且力学在中考中所占比例为40 ，绝大多数的难题都集中在力学，比如填空单选的最后一道，力学压轴计算题；因此不论从难度还是从中考的出题方向来说，难点大都集中在了力学。
3）初二下学期学生成绩差距拉大：在上半学期的声光热考试中，可能班级的平均分能达到八九十分，绝大多数学生都集中在这个区间，成绩差距不会太大。但到了力学这块，学得好的学生可能还保持在九十分左右，而学得不好的学生可能只得六七十分了，相对上半学期来讲，成绩差距会很大。
4）初二下学期学生心态会出现两极分化：由于从声光热的感性知识到力学的理性知识，从原来和优秀学生差距几分到力学的几十分，学生的心态会出现很大的变化，从上半学期的物理到开始学力学的雾里到成绩拉开后的勿理，在心态上学生开始对物理产生抵触心理，不愿学，成绩差距更大，更没信心学下去了，不愿意学导致成绩差距更大.....会产生一个恶性循环。
综上所述，在初二下半学期学生面临着时间紧，任务重，难度大，心态波动明显等诸多难题，学好了，成绩高，心态好，动力足，良性循环；学不好，成绩差，心态低落，信心不足，不想再学，恶性循环，两极分化。
2、选择杜春雨老师沪科版春季课程的理由
1）把握考点，总结题型：兵不在多而在精，多年的教学经验使得杜老师能够在课堂上包含所有考点，并为同学总结各种题型，分题型讲解，一劳永逸。
2）课程轻松，压力不大：这也是杜老师一直的教学理念，让学员在轻松的学习环境中吸收知识，课堂轻松活泼，针对两极分化严重情况，课堂上杜老师也会时不时为学生疏导。一个初二英语完形填空，帮忙解答一下。急用!_百度知道
一个初二英语完形填空，帮忙解答一下。急用!
There are many Christmas __ .special .tradition .popularThe Christmas __is a__time when family and friends join together to __.light celebrate ，darkness and __in winter.cold holiday . It is decorated with__and colourful ribbons during the days before and __Christmas . One of the most __is the Christmas tree which is an evergreen tree .after .The tradition comes from the ancient idea that the evergreen tree stands for a celebration of the renewal of life at a time of death
提问者采纳
cold 注意所填单词在需要的时候要变形
有什么不懂的再问啊,lights答案依次是：holiday,after,special,traditions,popular,celebrate
提问者评价
采纳率100%
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出门在外也不愁各位英语精英们，帮忙翻译一下下面这段话，急用！谢谢了，拜托！！
各位英语精英们，帮忙翻译一下下面这段话，急用！谢谢了，拜托！！ 10
社会生产的各个行业，诸如交通、冶金、航空、电力、建筑乃至人们的日常生活中，都使用着各种各样的机器或机械。它们的品种数量和性能极大的影响着这些行业的生产能力，质量水平及经济效益等。这些机器、机械、仪器和工具统称为机械装备，它们的大部分构件都是一些具有一定形状和尺寸的金属零件。能够生产这些零件并将其装配成机械装备的工业，称之为机械制造业。而机械制造工业发达与否，直接影响着社会经济的发展。因此，机械制造工业是国民经济发展的重要基础和有力支柱，其规模和水平是反映国家经济实力和科学技术水平的重要标志。

作为当代学习机械制造专业的我们，更应该学习好本专业的基础知识，争取能用我们的技术，为推动社会经济的发展，做出自己的贡献。
Social production of various industries, such as transport, metallurgy, aviation, electricity, construction and even the people&s daily lives, using a variety of machines or machinery. The number and variety of their great impact on the performance of the productive capacity of these industries, such as quality and cost-effective. These machines, machinery, apparatus and tools are collectively referred to as machinery and equipment, most of them have certain elements are the shape and size of metal parts. Able to produce and assemble these parts into machinery and equipment industry, known as the machine manufacturing industry. And machinery manufacturing industries developed or not, a direct impact on socio-economic development. Therefore, the machinery manufacturing industry is an important foundation for national economic development and a strong pillar of its scale and level is a reflection of the country&s economic strength and scientific and technological level of an important symbol. 
Machinery as a contemporary study of our profession, but it should be good to learn the basis of professional knowledge, for use of our technology, to promote the social and economic development, to make its own contribution. 

其他回答 (2)
Social production of various industries, such as transport, metallurgy, aviation, electricity, construction and even the people&s daily lives, using a variety of machines or machinery. The number and variety of their great impact on the performance of the productive capacity of these industries, such as quality and cost-effective. These machines, machinery, apparatus and tools are collectively referred to as machinery and equipment, most of them have certain elements are the shape and size of metal parts. Able to produce and assemble these parts into machinery and equipment industry, known as the machine manufacturing industry. And machinery manufacturing industries developed or not, a direct impact on socio-economic development. Therefore, the machinery manufacturing industry is an important foundation for national economic development and a strong pillar of its scale and level is a reflection of the country&s economic strength and scientific and technological level of an important symbol. 

 Machinery as a contemporary study of our profession, but it should be good to learn the basis of professional knowledge, for use of our technology, to promote the social and economic development, to make its own contribution.
Various machines are being used in every business of the social manufacture, including traffic, metallurgy, aviation, electrical power and construction, people’s daily lives as well. Their quantities, functions and varieties have great influences on those fileds’ manufacturing abilities, quality levels and ecnomical benefits. All those machines, instruments and tools are called machine equipment, most of which are metal components with certain shape and size. Machinery industy are able to manufacture those components and assemble them into complete equipments. Machinery manufacture industry is an important basis and strong backbone of the national economic development, and their scales and levels are important symbols of a country’s conomic power and scientific and technical level, because whether it is developed or not has a great influence on social and economic development. As students majoring in machinery manufacture, we should lay a solid basis in the learning of our major and try to contribute our technologies to promoting the social and economic development.

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