This happens because the dish soap molecules have a strong negative charge, and the milk molecules have a strong positive charge. Like magnets, these molecules are attracted to each other, and so they appear to move around on the plate, taking the food coloring with them, making it look like the colors are quickly moving to escape from the soap.Listening text:? Judy: Oh, I'm so sorry that you were ill and couldn't come with us on our field trip. How are you feeling now? Better?? Bill: Much better, thanks. But how was it?? Judy: Wonderful! I especially liked an area of the museum called Light Games.it was really cool. They had a hall of mirrors where I could see myself reflected thousands of times!? Bill: A hall of mirrors can be a lot of fun. What else did they have?? Judy: Well, they had an experiment where we looked at a blue screen for a while, and then suddenly we could see tiny bright lights moving around on it. You'll never guess what those bright lights were!? Bill: Come on, tell me!? Judy: They were our own blood cells. For some reason, our eyes play tricks on us when we look at a blue screen, and we can see our own blood cells moving around like little lights! But there was another thing I liked better. I stood in front of a white light, and it cast different shadows of me in every color of the rainbow!? Bill: Oh, I wish I had been there. Tell me more!? Judy: Well, they had another area for sound. They had a giant piano keyboard that you could use your feet to play. But then, instead of playing the sounds of a piano, it played the voices of classical singers! Then they had a giant dish, and when you spoke into it, it reflected the sound back and made it louder. You could use it to speak in a whisper to someone 17 meters away.? Bill: It all sounds so cool. I wish I could have gone with you? Judy: I know, but we can go together this weekend. I'd love to go there again!? Bill: That sounds like a great idea!
The grammar of this unit is designed to review noun clauses. Sentences that use nouns in a sentence are called noun clauses. Nominal clauses can act as subject, object, predicate, appositive and other components in compound sentences. According to the above-mentioned different grammatical functions, nominal clauses are divided into subject clause, object clause, predicate clause and appositive clause. In this unit, we will review the three kinds of nominal clauses. Appositive clauses are not required to be mastered in the optional compulsory stage, so they are not involved.1. Guide the students to judge the compound sentences and determine the composition of the clauses in the sentence.2. Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.3. Inspire the students to systematize the function and usage of noun clause1.Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.2.Inspire the students to systematize the function and usage of noun clauseStep1: The teacher ask studetns to find out more nominal clauses from the reading passage and udnerline the nominal clauses.
The newspaper reported more than 100 people had been killed in the thunderstorm.报纸报道说有一百多人在暴风雨中丧生。(2)before、when、by the time、until、after、once等引导的时间状语从句的谓语是一般过去时,以及by、before后面接过去的时间时,主句动作发生在从句的动作或过去的时间之前且表示被动时,要用过去完成时的被动语态。By the time my brother was 10, he had been sent to Italy.我弟弟10岁前就已经被送到意大利了。Tons of rice had been produced by the end of last month. 到上月底已生产了好几吨大米。(3) It was the first/second/last ... time that ...句中that引导的定语从句中,主语与谓语构成被动关系时,要用过去完成时的被动语态。It was the first time that I had seen the night fact to face in one and a half years. 这是我一年半以来第一次亲眼目睹夜晚的景色。(4)在虚拟语气中,条件句表示与过去事实相反,且主语与谓语构成被动关系时,要用过去完成时的被动语态。If I had been instructed by him earlier, I would have finished the task.如果我早一点得到他的指示,我早就完成这项任务了。If I had hurried, I wouldn't have missed the train.如果我快点的话,我就不会误了火车。If you had been at the party, you would have met him. 如果你去了晚会,你就会见到他的。
The discourse explores the link between food and culture from a foreign’s perspective and it records some authentic Chinese food and illustrates the cultural meaning, gerography features and historic tradition that the food reflects. It is aimed to lead students to understand and think about the connection between food and culture. While teaching, the teacher should instruct students to find out the writing order and the writer’s experieces and feelings towards Chinese food and culture.1.Guide the students to read the text, sort out the information and dig out the topic.2.Understand the cultural connotation, regional characteristics and historical tradition of Chinese cuisine3.Understand and explore the relationship between food and people's personality4.Guide the students to use the cohesive words in the text5.Lead students to accurately grasp the real meaning of the information and improve the overall understanding ability by understanding the implied meaning behind the text.1. Enable the Ss to understand the structure and the writing style of the passage well.2. Lead the Ss to understand and think further about the connection between food and geography and local character traits.Step1: Prediction before reading. Before you read, look at the title, and the picture. What do you think this article is about?keys:It is about various culture and cuisine about a place or some countries.
You have no excuse for not going.你没有理由不去。He was punished for not having finished his homework.他因未完成作业而受到惩罚。2.动词ing形式复合结构由物主代词或人称代词宾格、名词所有格或普通格加动词ing,即“sb./sb.'s+doing”构成。动词ing形式的复合结构实际上是给动词ing形式加了一个逻辑主语。动词ing形式的复合结构有四种形式:①形容词性物主代词+动词ing②名词所有格+动词ing③代词宾格+动词ing④名词+动词ingHer coming to help encouraged all of us.她来帮忙鼓舞了我们所有人。The baby was made awake by the door suddenly shutting.这个婴儿被突然的关门声吵醒了。Can you imagine him/Jack cooking at home?你能想象他/杰克在家做饭的样子吗?无生命名词无论是作主语还是作宾语都不能用第②种形式。Tom's winning first prize last year impressed me a lot.汤姆去年得了一等奖使我印象深刻。Do you mind my/me/Jack's/Jack leaving now?你介意我/杰克现在离开吗?Excuse me for my not coming on time.很抱歉我没能按时来。His father's being ill made him worried.他父亲病了,他很担心。We are looking forward to the singer's/the singer to give us a concert.我们盼望着这位歌手来给我们举办一场演唱会。
2020新年伊始,一场疫情突如其来,来势汹汹,令人始料不及。一场与新型冠状病毒肺炎的人民战争打响;为了对抗疫情,武汉封城,全国各地的高速多处都被封。然而,一方有难,八方支援,全国各地的援助接踵而至,各地的捐款活动如火如荼地展开,各地的医疗力量从四面八方涌向武汉——疫情最危险的地方,与疫情相争,与死神相抗。更有八十三岁高龄的钟南山教授勇赴医疗前线。在其中,有一种情怀,叫钟南山精神;有一种崇高,叫生命守护;有一种宗旨,叫救治患者;有一种前行,叫疫情中的逆行者;有一座高山,叫雷神山火神山。除此以外,各省也启动了重大突发公共卫生事件一级响应,在人类共同的危难中,任何的偏见、分歧都烟消云散,日本送来援助物资,希望中国早日控制住疫情。
方干,字雄飞,桐庐人。幼有清才,散拙①无营务。大中中,举进士不第,隐居镜湖中。湖北有茅斋,湖西有松岛。每月明风清,携稚子邻叟,轻舟往返,甚惬素心。所住水门閟②,一草一花,俱能留客。家贫,蓄古琴,行吟醉卧以自娱。徐凝初有诗名,一见干器之,遂相师友,因授格律。干有赠凝诗,云“把得新诗草里论”。时谓反语为村里老,疑干讥诮,非也。王大夫廉问浙东,礼邀干至,嘉其操,将荐于朝,托吴融草表。行有日,王公以疾逝去,事不果成。干早岁偕计③,往来两京,公卿好事者争延纳,名竟不入手,遂归,无复荣辱之念。浙中凡有园林名胜,辄造主人,留题几遍。初李频学干为诗,频及第,诗僧清越贺云:“弟子已折桂,先生犹灌园。”咸通末卒。门人相与论德谋迹,谥曰玄英。乐安孙郃等,缀其遗诗三百七十余篇,为十卷。
①人人在童年,都是时间的富翁。我有时待在家里闷得慌,就不免要到离家很近的那个街口,去看快手刘变戏法。②快手刘是个摆摊卖糖的大胖汉子。随身背着的绿色小木箱,上面插着一排排廉价的棒糖。他变戏法是为吸引孩子们来买糖。戏法很简单,俗称“小碗扣球”。一块绢子似的黄布铺在地上,两只白瓷小茶碗,四个滴溜溜的大红玻璃球儿。他两手各拿一只茶碗,你明明看见每只碗下边扣着两个红球儿,你连眼皮都没眨一下,只见他一边叫天喊地,东指一下手,西吹一口气,嘿!四个球儿竟然全都跑到一只茶碗下边去了。
【甲】鱼,我所欲也;熊掌,亦我所欲也。二者不可得兼,舍鱼而取熊掌者也。生,亦我所欲也;义,亦我所欲也。二者不可得兼,舍生而取义者也。生亦我所欲,所欲有甚于生者,故不为苟得也;死亦我所恶,所恶有甚于死者,故患有所不辟也。如使人之所欲莫甚于生,则凡可以得生者何不用也?使人之所恶莫甚于死者,则凡可以辟患者何不为也?由是则生而有不用也,由是则可以辟患而有不为也。是故所欲有甚于生者,所恶有甚于死者。非独贤者有是心也,人皆有之,贤者能勿丧耳。
江城子?密州出猎苏轼老夫聊发少年狂, 左牵黄, 右擎苍, 锦帽貂裘, 千骑卷平冈。 为报倾城随太守, 亲射虎, 看孙郎。酒酣胸胆尚开张。 鬓微霜, 又何妨! 持节云中, 何日遣冯唐? 会挽雕弓如满月, 西北望, 射天狼。
可燃冰是由水和天然气在高压、低温情况下形成的类冰状结晶物质,结构上它是甲烷为主的有机分子被包在水分子组成的“笼子”里,由于甲烷是天然气的主要成分,所以其学名是天然气水合物。它之所以被称作“可燃冰”,一方面是因为既含水又呈固体,看来像冰,另一方面,甲烷与水分子结合很弱,外界稍加扰动就可以让其分离出来,很容易点燃。
银河系中栖息着数千亿颗恒星,它们彼此差异极大,这种差异部分源于它的庞大。每一颗肉眼能见的恒星,包括太阳,都是它的成员。银河系是如此巨大,太阳绕其中心运行一周 需要 2.3 亿年。设想一位天文学家用 1 厘米代表日地距离来绘制银河系图,他将需要一张比整个地球大得多的纸才能完全包容银河系。在这张图上,银河系中心到太阳的距离是 1. 7 万千米,相当于太阳到银河系中心的实际距离 2.7 万光年。 甚至太阳到银河系中心的距离也不足以描述银河系的大小,因为太阳离银河系边缘比离银河系中心更远。包含太阳在内的银河系盘体叫做银盘,它是银河系中呈烙饼状的明亮部分。它含有旋臂,使得在银河系外的观测者看来,银河系就像一架玩具风车。银盘边缘到其中心 大约 6.5 万光年,所以银盘的直径约 13 万光年。但银盘只是银河系的一部分,有些不属于银 盘的恒星,还远在它的外边。
江城子?密州出猎苏轼老夫聊发少年狂, 左牵黄, 右擎苍, 锦帽貂裘, 千骑卷平冈。 为报倾城随太守, 亲射虎, 看孙郎。酒酣胸胆尚开张。 鬓微霜, 又何妨! 持节云中, 何日遣冯唐? 会挽雕弓如满月, 西北望, 射天狼。(1)这首词的词牌名是 ,从本词的题材及语言风格看,是一首 词。(2)词的下片中用遣冯唐的典故表达了什么意思?
我家后面有一条弯弯曲曲的胶河、沿着高高的河堤向东北方向走七里左右路,就到了一片方圆数千亩的荒草甸子。每年夏天,爷爷都击那儿割草,我爷爷的镰刀磨得快,割草技术高,割下来的草干净,不拖泥带水。 最早跟爷爷去荒草甸子剖草,是刚过了七岁生日不久的 一天。堤顶是一条灰白的小路,路的两边长满野草,行人的脚压适迫得它们很瑟缩,但依然是生气勃勃的。爷爷的步子轻悄悄的,走得不紧不慢,听不到脚步声。田野里丝线流苏般的玉米缨儿,刀剑般的玉米叶儿,刚秀出的高粱穗儿,很结实的谷子尾巴,都在雾中时隐时现。河堤上的绿草叶儿上挂着亮晶晶的露水珠儿,微微颤抖着,对我打着招呼。
①余幼时即嗜学。家贫,无从致书以观,每假借于藏书之家,手自笔录,计日以还。天大寒,砚冰坚,手指不可屈伸,弗之怠。录毕,走送之,不敢稍逾约。以是人多以书假余,余因得遍观群书。既加冠,益慕圣贤之道,又患无硕师、名人与游,尝趋百里外,从乡之先达执经叩问。先达德隆望尊,门人弟子填其室,未尝稍降辞色。余立侍左右,援疑质理,俯身倾耳以请;或遇其叱咄,色愈恭,礼愈至,不敢出一言以复;俟其欣悦,则又请焉。故余虽愚,卒获有所闻。
①余幼时即嗜学。家贫,无从致书以观,每假借于藏书之家,手自笔录,计日以还。天大寒,砚冰坚,手指不可屈伸,弗之怠。录毕,走送之,不敢稍逾约。以是人多以书假余,余因得遍观群书。既加冠,益慕圣贤之道,又患无硕师、名人与游,尝趋百里外,从乡之先达执经叩问。先达德隆望尊,门人弟子填其室,未尝稍降辞色。余立侍左右,援疑质理,俯身倾耳以请;或遇其叱咄,色愈恭,礼愈至,不敢出一言以复;俟其欣悦,则又请焉。故余虽愚,卒获有所闻。
端着饭,走到外边,坐在一块空心砖上,虽然饿极了,虽然是他最喜欢的牛肉面,他却慢条斯理地吃着,他享受着美味。不像那个首先急着把饭里的牛肉挑着吃了的二狗子﹣﹣吃那么快会很快吃完,很快吃饱,很快失去享受的时间。尤其是那块最大的牛肉,他毫无疑问地会留到最后吃,等吃完所有的面条、碎肉,喝光所有的汤之后再去细细品味,仔细享受,这叫碗底香。在他,这样吃饭也是人生一大享受!
①人人在童年,都是时间的富翁。我有时待在家里闷得慌,就不免要到离家很近的那个街口,去看快手刘变戏法。②快手刘是个摆摊卖糖的大胖汉子。随身背着的绿色小木箱,上面插着一排排廉价的棒糖。他变戏法是为吸引孩子们来买糖。戏法很简单,俗称“小碗扣球”。一块绢子似的黄布铺在地上,两只白瓷小茶碗,四个滴溜溜的大红玻璃球儿。他两手各拿一只茶碗,你明明看见每只碗下边扣着两个红球儿,你连眼皮都没眨一下,只见他一边叫天喊地,东指一下手,西吹一口气,嘿!四个球儿竟然全都跑到一只茶碗下边去了。
【活动一 征集城市主题歌曲】城市的歌,也许是最朴实的文字,也许是最平淡的旋律。城市的歌,不仅可以释放出对城市的深情与厚谊,而且可以传达出对家乡的赞美与眷念。目前,遂宁城市主题歌曲征集活动已经正式启动,请你为本次活动拟写一条宣传标语。(至少使用一种修辞手法,字数20字以内)。(2分)
和金刚石一样,石墨是碳元素的一种存在形式。不同的是,由于原子结构不同,金刚石是地球上最坚硬的东西,石墨则是最软的矿物之一。石墨烯就是从石墨材料中剥离出来的,只由一层碳原子在平面上构成的薄片。 石墨烯的特点之一就是薄,堪称目前世界上最薄的材料。石墨烯只有一个原子那么厚,约0.3纳米,是一张A4纸厚度的十万分之一,头发丝的五十万分之一。同时,它又能导电,电子在石墨烯中的运动速度达1000千米/秒,是光速的1/300。轻薄、强韧、导电、导热……石墨烯的这些性质赋予人们许多想象空间。 中国电科55所的孔月婵博士介绍说,石墨烯的硬度非常强,比最强的钢铁还要强100倍;石墨烯的电子运行速度也非常高,是硅的10倍,非常适合发展下一代超高频电子器件。此外,石墨烯还是传导热量的高手,比最能导热的金属银还要强10倍。