职称英语补全短文第3课时1
PASSAGE 8
Einstein Named "Person of Century"
Albert Einstein，whose theories on space time and matter helped unravel the secrets of the atom and of the universe，was chosen as "Person of the Century" by Time magazine on Sunday.
A man whose very name is synonymous with scientific genius，Einstein has come to represent_（1）_the flowering of 20th century scientific thought that set the stage for the age of technology.
"The world has changed far more in the past 100 years than in any other century in history. The reason is not political or economic，but technological-technologies_（2）_，" wrote theoretical physicist Stephen Hawking in a Time essay explaining Einstein's significance. "Clearly，no scientist better represents those advances than Albert Einstein."
Time chose as runner-up President Franklin Roosevelt to represent the triumph of freedom and democracy over fascism，and Mahatma Gandhi as an icon for a century when
civil and human rights became crucial factors in global politics.
"What we saw Franklin Roosevelt embodying the great theme of freedom's fight against totalitarianism，Gandhi personifying the great theme of individuals struggling for their rights，and Einstein being both a great genius and a great symbol of a scientific revolution that brought with it amazing technological advances_（3）_，" said Time Magazine Editor Walter Isaacson.
Einstein was born in Ulm，Germany in 1879. In his early years，Einstein did not show the promise of what he was to become. He was slow to learn to speak and did not do well in elementary school. He could not stomach organized learning and loathed taking exams.
In1905，however，he was to publish a theory which stands as one of the most intricate examples of human imagination in history. In his "Special Theory of Relativity，" Einstein described how the only constant in the universe is the speed of light. Everything else-mass，weight，space，even time itself-is a variable. And he offered the world his
now-famous equation：energy equals mass times the speed of light squared-E=mc2.
"Indirectly，relativity paved the way for a new
relativism in morality，art and politics，" Isaacson wrote in an essay___（4）____. "There was less faith in absolutes，not only of time and space but also of truth and morality."
Einstein's famous equation was also the seed that led to the development of atomic energy and weapons. In1939，six years after he fled European fascism and settled at Princeton University，Einstein，an avowed pacifist，signed a letter to President Roosevelt urging the United States to develop an atomic bomb before Nazi Germany did. Roosevelt heeded the advice and formed the "Manhattan Project"_（5）_. Einstein did not work on the project.
Einstein died in Princeton，New Jersey in 1955.
A.explaining Time's choices
B. how he thought of the relativity theory
C. more than any other person
D. that secretly developed the first atomic weapon
E. that flowed directly from advances in basic science
F. that helped expand the growth of freedom
Key：CEFAD
PASSAGE 9
The First Four Minutes
When do people decide whether or not they want to
become friends？During their first four minutes together，according to a book by Dr. Leonard Zunin. In his book，"Contact：The first four minutes"，he offers this advice to anyone __（1）___："Every time you meet someone in a social situation，give him your undivided attention for four minutes.
A lot of people's whole lives would change if they did just that"。
You may have noticed that the average person does not give his undivided attention to someone he has just met. He keeps looking over the other person's shoulder，as if __（2）__. If anyone has ever done this to you，you probably did not like him very much.
When we are introduced to new people，the author suggests，we should try to appear friendly and self-confident. In general，he says，"People like people who like themselves"。
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2016职称英语教材-卫生类C级完形填空及参考译文1 第一篇Better Control of TB Seen If a Faster Cure Is Found The World Health Organization1 estimates that about one-third of all people are infected with bacteria that cause tuberculosis . Most times, the infection remains inactive. But each year about eight million people develop active cases of TB, usually in their lungs. Two million people die of it. The disease has increased with the spread of AIDS and drug-resistant forms of tuberculosis. Current treatments take at least six months. People have to take a combination of several antibiotic drugs daily. But many people stop as soon as they feel better. Doing that can lead to an infection that resists treatment. Public health experts agree that a faster-acting cure for tuberculosis would be more effective. Now a study estimates just how effective it might be. A professor of international health at Harvard University2 led the study. Joshua Salomon says a shorter treatment program would likely mean not just more patients cured. It would also mean fewer infectious patients who can pass on their infection to others. The researchers developed a mathematical model to examine the effects of a two-month treatment plan. They tested the model with current TB conditions in Southeast Asia. The scientists found that a two-month treatment could prevent about twenty percent of new cases. And it might prevent about twenty-five percent of TB deaths. The model shows that these reductions would take place between two thousand twelve and two thousand thirty. That is, if a faster cure is developed and in wide use by two thousand twelve. The World Health Organization reductions the DOTS3 program in nineteen ninety. DOTS is Directly Observed Treatment, Short-course. Health workers watch tuberculosis patients take their daily pills to make sure they continue treatment. Earlier this year, an international partnership of organizations announced a plan to expand the DOTS program. The ten-year plan also aims to finance research into new TB drugs. The four most common drugs used now are more than forty years old. The Global Alliance for TB Drug Development4 says its long-term goal is a treatment that could work in as few as ten doses. 1.找到速效治疗剂可以更好控制结核病 世界卫生组织估计全球有大约三分之一的人感染了导致结核病的病菌。大多数时候，这种感染是不活跃的。但是每年大约有八百万结核病病例，通常是在肺部。两百万人因此丧命。结核病发病率由于艾滋病的传播和抗药型结核病的出现而增加。目前的治疗至少需要六个月。患病者不得不每日服用多种抗生素药品。许多人在稍感舒适后就停止使用药品，这么做可能导致抗药性感染。公共卫生专家一致认为针对结核病的速效治疗剂将会更加有效果。现在有一项研究评估这种速效治疗剂究竟效力有多大。这项研究由美国哈佛大学国际卫生方面的教授率领。Joshua Salomon说，疗程较短的治疗计划可能不仅仅意味着更多病人被治好，也意味着将感染传给别人的病人会更少。 研究者们设计了一个数学模型来检测两个月治疗计划的效果。他们以东南亚目前的结核病情况来检验这个模型。科学家们发现两个月的治疗可以防止大约20％的新病例，也可能防止大约5％因结核病引起的死亡。这个模型表明，如果速效治疗剂可以在2012年前研发出来并大规模使用的话，减少结核病例在2012年到2030年间就可以实现。 世界卫生组织在1990年制定了DOTS计划，DOTS意指短期直接观察治疗。卫生工作者监督结核病人每天服药，以确信他们继续治疗。今年年初，一个国际组织同盟宣布了一项扩大DOTS的计划。这个十年计划也旨在资助新结核药品的研究。现在四种最常用的药品也有四十多年的历史了。全球结核病药物开发联盟宣称它的长期目标是找到一种治疗方法，可以通过十次剂量就效果。
小学英语阅读短文【小学英语阅读小短文带翻译】 在英语学习中，阅读是人们获取英语知识、提高英语水平的有效途径。英语阅读既是重要的语言技能，也是重要的学习技能，是发展其他语言技能的基础和前提。小编整理了小学英语阅读小短文带翻译，欢迎阅读! 小学英语小短文带翻译篇一 In western countries, more and more young kids have the problem of obesity, because of the popularity of fast food. The culture of KFC and Mcdonald’s attract the kids all the time, the food there is full of high calorie, which is easy to become fat. Many kids are willing to spend the time in eating fast food, because the fried food cater to them. In China, there is also the increasing number of children obesity, in order to help the kids grow in the healthy way, the balanced diet is advocated. Meat and vegetable are indispensable, while eating more vegetables and fruit is healthier. To stay away from the fast food is the key to be fit. 在西方国家,越来越多的年轻孩子们出现肥胖的问题,因为快餐深受欢迎。肯德基和麦当劳的文化吸引着孩子们,那里的食物含有高热量,容易变胖。许多孩子愿意花时间去吃快餐,因为油炸食品迎合他们的口味。在中国,也有越来越多的肥胖儿童,为了帮助孩子们健康地成长,倡导平衡饮食。肉和蔬菜是必不可少的,多吃蔬菜和水果是健康的。远离快餐是保持健康的关键。小学英语小短文带翻译篇二 When we ask a foreigner what’s his impression about China, then he tell you about the delicious food and Chinese Kongfu. Chinese Kongfu has been a symbol, the first person that make the world recognize China by his Kongfu movie is Bruce Lee. Though he died, he still got a lot of fans today, everybody knows him well. Then Jackie Chen make Chinese Kongfu famous all around the world, his movie is very funny by all kinds of actions. Many Hollywood directors have come to China to seek for cooperation, they want to film the movie that contains Chinese Kongfu. Kongfu is part of our culture and the world is knowing us by it. 当我们问一个外国人对中国的印象是什么,然后他告诉你美味的食物和中国功夫。中国功夫已经成为了一个符号,让世界通过中国功夫去认识中国的第一人是李小龙。虽然他死了,但他至今仍有很多粉丝,所有人都知道他。然后成龙让中国功夫在全世界都出名,他的电影很搞笑,通过各种各样的行动。许多好莱坞导演来中国寻求合作,他们想让电影包含有中国功夫。功夫是我们文化的一部分,世界也通过功夫去认识我们。小学英语小短文带翻译篇三We are always educated that animals are our friends and we should protect them. Most families have kept dogs as their pets, some moving stories often happen between these lovely dogs and their owners. The famous movie Hachi tells about a dog spends a lifetime to wait for his master, who had died of heart attack. Recently, it has been reported that a little girl was saved from the earthquake because of her dog’s protection. Dogs are our loyal friends and they deserve our respect. Some people kill dogs and enjoy eating the dog meat, they have been criticized strongly. Protecting animals is saving our human being, the balanced of nature won’t be broken. 我们总是受到教育动物是我们的朋友,我们应该保护他们。大多数家庭一直把狗作为他们的宠物,一些感人的故事经常发生这些可爱的狗和它们的主人中。著名的电影“八公”讲述了一只狗花了一生的时间来等待他的主人,这个人死于心脏病。最近,据报道,一个小女孩从地震得救了,因为她的狗狗在保护着他。狗是我们忠实的朋友,他们应该得到我们的尊重。有些人杀狗,喜欢吃狗肉,他们受到了强烈的批评。保护动物就是在拯救我们人类,拯救大自然的平衡不被打破。小学英语小短文带翻译篇四 保持饥饿，保持愚蠢
2015年职称英语理工类B级考试真题 第一部分：词汇选项 1.The organization was bold enough to face the press. A.pleased B.powerful C.brave D.sensible 参考答案：C 2.I will not tolerate that sort of behavior in my class. A.accept B.control C.observe D.regulate 参考答案：A 3.I realized to my horror that I had forgotten the present. A.limit B.fear C.power D.fool 参考答案：B 4.Most people find rejection hard to accept. A.excuse B.client C.destiny D.refusal 参考答案：D 5.She's extremely competent and industrious. A.hardworking B.honest C.objective D.independent 参考答案：A 6.The doctors did not reveal the truth to him. A.hide B.handle C.disclose D.establish 参考答案：C 7.He tried to assemble his thoughts. A.clear B.share C.gather D.spare 参考答案：C
8.The law carries a penalty of up to three years in prison. A.message B.punishment C.guilt D.obligation 参考答案：B 9.Prisoners were kept in the most appalling conditions. A.flexible B.terrible C.reasonable D.serious 参考答案：B 10.These products are inferior to those we brought last year. A.poorer than B.narrower than https://www.doczj.com/doc/0112522267.html,rger than D.richer than 参考答案：A 11.The political situation in the region has deteriorated rapidly. A.improved B.changed C.worsened D.developed 参考答案：C 12.There was a simultaneous trial taking place in the next building. A.coexisting B.fair C.full D.pubic 参考答案：A 13.They're petitioning for better facilities for the disabled on public transport. A.requesting B.planning C.preparing D.looking 参考答案：A 14.He said some harsh words about his brother. A.unkind B.proper C.normal D.unclear 参考答案：A 15.We were attracted by the lure of quick money. A.amount
第1课时果酒和果醋的制作 [目标导读] 1.通过回顾“探究酵母细胞的呼吸方式”实验，掌握果酒制作的原理。2.结合教材P3“图1－3”，理解并掌握果酒和果醋制作的过程。3.结合教材P4“图1－4b及操作提示”，学会设计并安装简单的生产果酒及果醋的装置。 [重难点击] 1.掌握发酵作用的基本原理和方法。2.学习制作果酒、果醋的实际操作技能。 3.设计并安装简单的生产果酒及果醋的装置。 1.原核生物和真核生物的主要区别是原核细胞没有以核膜为界限的细胞核。依此为分类依据，酵母菌属于真核生物，醋酸杆菌属于原核生物。 2.酵母菌的代谢类型：异养兼性厌氧型微生物。 (1)在有氧条件下能进行有氧呼吸 反应式为：C6H12O6＋6O2―→6CO2＋6H2O (2)在无氧条件下能进行无氧呼吸 反应式为：C6H12O6―→2C2H5OH＋2CO2 3.氧气会抑制生物的无氧呼吸，下图是酵母菌释放二氧化碳量与氧气浓度的关系，请在其中画出无氧呼吸强度变化曲线。 答案 4.酒精的检测：酒精在酸性条件下，可以和重铬酸钾反应呈现灰绿色。 课堂导入 中国的酒文化历史悠久，源远流长，在酒的记载中有许多有趣的传说，近几年国内市场出现了越来越多的果酒、果醋。 果酒中不仅含有丰富的维生素和人体必需的氨基酸，而且对于抑制脂肪堆积、保护心脏、调节女性情绪都有着极其重要的作用。在众多品种的果酒中，葡萄酒醇厚、浓郁，耐人寻味，这节课我们就以葡萄酒为例探讨果酒的制作方法。 探究点一果酒、果醋制作的原理 发酵技术离不开微生物的作用，果酒制作中需要用到酵母菌，酿造果醋需要用到醋酸菌。 1.果酒制作的原理和流程 (1)酵母菌 繁殖方式：出芽生殖和孢子生殖。温度低时形成孢子，进入休眠状态；温度适宜时，进行出芽生殖，繁殖速度快。 (2)制作原理 在有氧条件下，酵母菌进行有氧呼吸，大量繁殖。在无氧条件下，酵母菌进行酒精发酵。 (3) 果酒的制作流程：挑选葡萄→冲洗→榨汁→酒精发酵→果酒。
The First Four Minutes最初四分钟 When do people decide whether or not they want to become friends?人们什么时候决定他们是否愿意成为朋友？During their first four minutes together, according to a book by Dr. Leonard Zunin. In his book, “Contact：The first four minutes" he offers this advice to anyone interested in starting new friendships：“Every time you meet someone in a social situation, give him your undivided attention for four minutes. (1) A lot of people's whole lives would change if they did just that. ”按列奥纳多?祖尼博士的书中所说是在他们相处的最初四分钟。在他的书《接触：最初四分钟》里，他向所有对开始新的友谊感兴趣的人们提出了这样的建议：“每次你在社交场合遇到什么人时，全神贯注地注意他四分钟。如果这样做了的话，他们的生活就会完全不同。”； You may have noticed that the average person does not give his undivided attention to someone he has just met. 你可能已经注意到了，一般人都不会全神贯注地注意一个他刚认识的人。(2) He keeps looking over the other person's shoulder, as if hoping to find someone more.他不停地往其他人身后看，好像要在屋里其他地方找到更趣的人似的。If anyone has ever done this to you, you probably did not like him very much.如果有人对你这样，你大概不会很喜欢他。
英语小短文带翻译100字20篇 1.A happy Day It was sunny and very hot today. I got up early and helped my parents cook breakfast. Then I washed the dishes and cleaned the room. After a short rest I did my homework in the morning. In the afternoon I went swimming in the nearest swimming pool with my friends. It was really cool to swim in such a hot day. I surfed the internet and read a storybook in the evening. I really had a busy and happy day. 今天天气晴朗比较热。我起得很早，帮父母做早饭。然后我洗碗打扫屋子。休息一会后我上午做作业。下午我和朋友去我家最近的游泳池游泳。在如此炎热的夏天游泳的确很棒。晚上我上网、看故事书。我今天很忙过得很快乐。 2.给笔友的一封信 Dear Lucy I am very glad to hear from you. Now let me introduce myself to you. My name is Li Lei. I am eleven years old. I am tall with a pair of glasses. Now I am studying at Yuying Primary School. I am in Class One，Grade 5. I like singing and playing the piano very much. I am good at English and Chinese. 很高兴收到你的来信。现在让我介绍我自己。我叫李雷。11岁。我高个子、带眼镜。我在育英小学。我在五年级一班。我非常喜欢唱歌和弹钢琴。我数学和语文学得都很好。 3。暑假打算 I will have a busy summer vacation. I am going to do my homework every day . I am going to the library to borrow some books and go to the shops to buy some books.I am going to do sports such as playing table tennis, swimming and so on. I am going to visit my grandparents and stay there for a week. I am going to help my parents do some housework. 我暑假会很忙。我每天要写作业。我打算去图书馆去借书、去商店买书。我要做运动，如：打乒乓球、游泳等。我要去看爷爷奶奶并在那住一周。我要帮父母做家务。 4.自我介绍 Hello, everyone. My name is Kelly. I am friendly and honest.I am good at English and maths. I like surfing the internet,playing computer games, watching TV and traveling. I also like playing table tennis and I am good at it ,too. I often play table tennis with my friends on weekends. And I want to be a famous table tennis player when I grow up. What I like most is to see the seagulls flying freely in the sky so I often go to the sea in summer. My favourite colour is white because I think white is symbolize purity. 大家好我的名字叫KELLY .我很友好、诚实。我擅长英语和数学。我爱上网、玩电脑网络游戏、看电视和旅游。我也喜欢打乒乓球。我经常和朋友们在周末打乒乓球，长大了我想当一个乒乓球运动员。最喜欢在海边看着海鸥自由自在的飞翔，因此在夏天我经常去海边。白色是我的最爱。因为我觉得白色是纯洁的象征。 5.A nice Sunday It is Sunday and it is a fine day today. We come to the People Park with our English teacher who came from Canada. Look ! Tom and other five boys are playing
专题3常见的烃第一单元脂肪烃第 3课时练习 形眼镜的材料。请写出由甲基丙烯酸羟乙酯制备聚甲基丙烯酸羟乙酯的化学方程式: 例2.两种或两种以上具有不饱和键的化合物之间也能通过加聚反应形成高分子化合物。 ［参考答案］C 2 .具有单、双键交替长链（如…— CH = CH — CH = CH — CH = CH —…）的高分子有可能成 为导电塑料。2000年诺贝尔化学奖即授予开辟此领域的 3位科学家。下列高分子中，可 能成为导电塑料的是 （ ） A .聚乙烯 B .聚丁二烯 C .聚苯乙烯 D .聚乙炔 ［参考答案］D 3. 1,3-丁二烯和苯乙烯在适当的条件下可以发生加聚反应生成丁苯橡胶。 下列结构简式中， 能正确反映丁苯橡胶结构的是 （ 例1.聚甲基丙烯酯羟乙醇的结构简式为 H s 兔 T cl c ICHO - C ,它是制作软质隐 尽一 c — c I CBO H 55n T cl c I CHO - 请写 ［参考答案］(1) CH 2 = CH 2 , CH=CH H ［针对训练］ 1 ?由乙烯推测丙烯的结构或性质正确的是 A .分子中三个碳原子在同一条直线上 B .分子中所有原子都在同一平面上 C .能使溴的四氯化碳溶液褪色 D .能发生加聚反应生成 -X : 二；■■二 出下列高分子化合物的单体。 (2) 2= CH — CH = CH
） ［参考答案］A 、D 4?形成下列高聚物的单体相同的是 ①卡 CH 2一 CH ? — CH — CH 2臨 ② 4 CH 2— CH 2— CH 2— CH ] —n I I CH 3 CH 3 ③-[CH 2— CH = CH — CH — CH 2— CHzb ④—[CH ?— CH = CH — CH ?— CH — CH2H I I CH 3 CH 3 A .①③ B .③④ C .①② D .②④ ［参考答案］C 5 ?聚四氟乙烯在耐热性和化学稳定性上都超过了其它塑料，号称“塑料王” 。在工业上有广 泛的用途，其合成线路如下图所示。请在方框内写出各物质的结构简式。 6 .写出下列反应的化学方程式： (1) 氯乙烯制聚氯乙烯 _______________________________________________ (2) 丙烯制聚丙烯 _______________________________________________ (3) 1, 3 一丁二烯制顺丁橡胶 _______________________________________________ 7?按题目要求写出结构简式 (1) 氯乙烯与丙烯按 1:1的物质的量比在一定条件下加聚成高分子化合物时，有三种加聚产 物(每个链接中有 5个碳原子)，试写出这3种物质的结构简式。 CH 3CH 3 I I (2) CH 3 — CH = CH 2与CH 3C = C — CH 3加聚所得产物可能有: (3) 高分子化合物+CH 2CH(CH 3)CH 2CH 2卜n 的单体分别是 : A . B . 氯仿 二氟一氯甲烷 四氟乙烯 聚四氟乙烯 A B C D
第1课时溶液的酸碱性与pH [目标导航] 1.了解溶液的酸碱性与pH的关系。2.学会pH的简单计算。3.了解溶液稀释时pH的变化规律，会计算各类混合溶液的pH。4.全方位地比较一强一弱。 一、溶液的酸碱性和pH 1．溶液的酸碱性 (1)溶液的酸碱性与c(H＋)、c(OH－)的关系 溶液的酸碱性取决于溶液中c(H＋)和c(OH－)的相对大小。 ①c(H＋)＞c(OH－)，溶液呈酸性，c(H＋)越大，酸性越强。 ②c(H＋)＝c(OH－)，溶液呈中性。 ③c(H＋)＜c(OH－)，溶液呈碱性，c(OH－)越大，碱性越强。 (2)常温下溶液的酸碱性与pH的关系 ①pH＜7，溶液呈酸性，pH越小，c(H＋)越大，溶液的酸性越强。 ②pH＝7，溶液呈中性。 ③pH＞7，溶液呈碱性，pH越大，c(H＋)越小，溶液的碱性越强。 2．pH (1)表达式：pH＝－lg c(H＋)。 (2)意义：pH越大，溶液碱性越强；pH越小，溶液酸性越强。 (3)适用范围：1×10－14 mol·L－1≤c(H＋)≤1 mol·L－1的溶液。 3．溶液酸碱性的测定方法 (1)指示剂法 该法只能测其pH的大致范围，常见指示剂变色范围为 指示剂变色范围 石蕊pH＜5红色5～8紫色＞8蓝色 酚酞pH＜8.2无色8.2～10浅红色＞10红色 甲基橙pH＜3.1 红色 3.1～ 4.4 橙色 ＞4.4黄色 (2)pH试纸法
常用的pH试纸有广范pH试纸和精密pH试纸。前者的pH差值为1，后者的pH差值约为0.2或0.3。 pH试纸的使用方法： 把小片试纸放在洁净的表面皿或玻璃片上，用玻璃棒蘸取待测液滴在干燥的pH试纸上，试纸变色后，与标准比色卡对比，即可确定溶液的pH。 (3)pH计测量法 议一议 1．判断溶液酸碱性的标准是什么？pH＝7的溶液是否一定为中性溶液？ 答案判断溶液酸碱性的标准是比较c(H＋)、c(OH－)的相对大小，pH＝7的溶液不一定为中性溶液，只有在常温下pH＝7的溶液才为中性溶液，因为K w只与温度有关，如在100 ℃时，K w＝1.0×10－12，pH＝6为中性，pH＝7应为碱性。 2．怎样理解酸的酸性强弱与溶液的酸性强弱？ 答案酸的酸性强弱是指酸电离出H＋的难易，如HNO3的酸性比H3PO4的强。而溶液的酸性强弱是指溶液中H＋的浓度大小，H＋浓度越大，溶液的酸性越强。 二、溶液pH的计算 练一练 1．已知在常温下 (1)c(H＋)＝1.0×10－3 mol·L－1的某溶液中，c(OH－)＝____________________，pH为______。 (2)pH＝4的盐酸溶液中，c(H＋)＝________________，c(H＋)水＝____________________。 答案(1)1.0×10－11 mol·L－1 3 (2)1.0×10－4 mol·L－1 1.0×10－10 mol·L－1 2．常温下，计算下列溶液的pH。 (1)1.0×10－3 mol·L－1的盐酸的pH为________。 (2)5.0×10－4 mol·L－1的H2SO4溶液的pH为________。 (3)将8 g NaOH固体溶于水得到2 L溶液，其pH为________。 (4)a mol·L－1的Ba(OH)2溶液的pH为___________________________。 答案(1)3(2)3(3)13(4)15－lg5＋lg a 方法导引单一溶液的pH值计算方法 (1)计算原则 酸性溶液：求c(H＋)→求pH的值。 K w求c(H＋)→求pH值。 碱性溶液：求c(OH－)――→ (2)公式：pH＝－lg c(H＋)
职称英语补全短文第3课时1 PASSAGE 8 Einstein Named "Person of Century" Albert Einstein，whose theories on space time and matter helped unravel the secrets of the atom and of the universe，was chosen as "Person of the Century" by Time magazine on Sunday. A man whose very name is synonymous with scientific genius，Einstein has come to represent_（1）_the flowering of 20th century scientific thought that set the stage for the age of technology. "The world has changed far more in the past 100 years than in any other century in history. The reason is not political or economic，but technological-technologies_（2）_，" wrote theoretical physicist Stephen Hawking in a Time essay explaining Einstein's significance. "Clearly，no scientist better represents those advances than Albert Einstein." Time chose as runner-up President Franklin Roosevelt to represent the triumph of freedom and democracy over fascism，and Mahatma Gandhi as an icon for a century when
一分钟励志英语演讲稿带翻译英语口语演讲小短文 精选 励志的演讲稿能够让我们更好地积极面对生活，下面小编为大家整理了一些英语励志演讲稿，供参考! ? ?一分钟励志英语演讲稿范文带翻译You are Absolutely Unique ?Enjoy that uniquenesss1. You do not have to pretend in order to seem more ?like someone else. You do not have to lie to hide the parts of you that are not ?like what you see in anyone else. ?You were meant to be different. Nowhere, in all of history, will the same ?things be going on in anyone’s mind, soul and spirit as are going on in yours ?right now. ?If you did not exist, there would be a hole in creation, a gap2 in history, ?and something missing from the plan for humankind. Treasure your uniqueness. It ?is a gift given only to you. Enjoy it and share it! ?No one can reach out to others in the same way that you can. No one can ?speak your words. No one can convey your meanings. No one can comfort others with your kind of comfort. No one can bring your kind of understanding to ?another person. No one can be cheerful and light-hearted3 and joyous4 in your way. No one can smile your smile. No one else can bring the whole unique impact ?of you to another human being.
专题1化学家眼中的物质世界 第一单元丰富多彩的化学物质 第3课时物质的聚集状态 课时跟踪检测 知识点一：决定物质体积的因素 1．下列有关气体体积的叙述中，正确的是() A．一定温度和压强下，各种气态物质体积的大小，由构成气体的分子的大小决定 B．一定温度和压强下，各种气态物质体积的大小，由构成气体的分子数决定 C．不同的气体若体积不同，则它们所含的分子数也不同 D．气体摩尔体积是指1 mol任何气体所占的体积约为22.4 L 解析：一定温度和压强下，不同气体的分子之间的平均距离都是大概相同的，分子很小，此时决定气体体积大小的主要因素就是分子数，A错，B正确；N＝ nN A＝V V m N A，若体积不同，不同状态下气体的V m也不同，故它们所含的分子数 可能相同，C错；气体摩尔体积22.4 L·mol－1，必须适用于标准状况下的气体，D错。 答案：B 2．相同物质的量的各种固体或液体的体积并不相同，其主要原因是() A．微粒大小不同B．微粒质量不同 C．微粒间距离不同D．温度、压强不同 解析：固体、液体微粒间间距差不多，当微粒数一定时，微粒大小就成了决定体积的主要原因。 答案：A 知识点二：气体的摩尔体积
3．下列各项数据中，表示气体摩尔体积的是() A．22.4 mol·L－1B．22.4 g·L－1 C．0.022 4 m3·mol－1D．22.4 mol·kg－1 解析：气体摩尔体积的单位是L·mol－1或m3·mol－1，C项正确。 答案：C 4．下列说法正确的是() A．标准状况下，1 mol石墨的体积约是22.4 L B．常温常压下，44 g CO2和28 g CO所占的体积相同 C．非标准状况下，1 mol任何气体的体积都不可能是22.4 L D．当微粒数目相同时，气体物质的体积主要决定于微粒本身的大小 解析：A中石墨为固体，1 mol体积小于22.4 L，C中非标准状况下，1 mol 任何气体体积可以是22.4 L，D中体积取决于外界条件。故选B。 答案：B 5．用N A表示阿伏加德罗常数的值，下列叙述正确的是() A．含有N A个氦原子的氦气在标准状况下的体积约为22.4 L B．25 ℃，1.01×105 Pa,32 g O2和O3的混合气体所含原子数为2.5N A C．标准状况下，11.2 L H2O含有的原子数为1.5N A D．常温常压下，44 g CO2体积为22.4 L 解析：含有N A个氦原子的氦气是1 mol，在标准状况下的体积约为22.4 L，故A对；25 ℃，1.01×105 Pa,32 g O2和O3的混合气体所含原子数为2N A，故B 错误；标准状况下，水是液体，11.2 L H2O含有的分子数不是0.5N A，故C错误；在常温常压下，44 g CO2的物质的量为1 mol，只有在标准状况下才为22.4 L，故D错误，故选A。 答案：A 6．标准状况下，与11.2 L NH3含有相同数目氢原子的物质是() A．8.4 L CH4B．0.5 mol HCl C．98 g H3PO4D．12 g H2O 解析：n(NH3)＝11.2 L 22.4 L/mol＝0.5 mol，NH3中n(H)＝0.5 mol×3＝1.5 mol。
文本13 想北平 第1课时 导学与探究 1．字音 (1)给下列加点的字注音 ①廿．七年( ) ②黏．合( ) ③浸．在( ) ④辜．负( ) ⑤空旷．( ) ⑥翩．翩( ) ⑦韭． 菜( ) (2)给多音字注音： ①刹????? 什刹．海 刹．车 ②调????? 调．整 调． 动 ③便??? ?? 很便．宜 便． 宜行事 ④空??? ?? 空．旷 空． 闲 2．辨形组词 ①????? 捡 俭 检 睑 ②???? ? 凑 揍 辏 ③???? ? 敦 墩 淳 ④???? ? 堪 勘 戡 ⑤? ?? ?? 旷 犷 ⑥???? ? 蜓 挺 铤 3．词语释义 ①廿：____________________________________________________________________ ②陶然：__________________________________________________________________ ③枝枝节节：______________________________________________________________
④俊伟：__________________________________________________________________ 4．近义词辨析 (1)九牛一毛·杯水车薪 “九牛一毛”比喻极大数量中的微小数量，表示微不足道。“杯水车薪”指用一杯水去灭一车柴草所烧起的火。比喻力量太小，对于解决困难起不了多大作用。 ①洛克菲勒投资公司掌管的近300亿美元的家族财产，对洛克菲勒家族庞大的家产而言，这可能只是__________。 ②这场小雨也不过是__________，起不到缓解旱情的作用。 (2)寂苦·寂寞 “寂苦”重在“苦”，即感觉寂寞悲苦；“寂寞”重在“寞”即孤单冷清。 ①赵明诚病逝后，李清照经历了一个女人难以面对的风风雨雨，她内心十分_________。 ②离开了熟悉的人群和家园，他孤单一人在外闯荡，很是________，特别是忙碌了一天，回到空荡荡的小屋。 一、整体感知 1．全文共8个自然段，可分为三部分，试概括各部分的内容。 2．题目为“想北平”，为什么不是“写北平”或“忆北平”？结合全文和写作背景回答。 二、深层探究 3．本文第1自然段在全文中起什么作用？ 4．“可是，我真爱北平”这句话在全文中起什么作用？作者以爱母亲类比爱北平，有什么作用？