2016-2020高考英语试题分类汇总-短文改错(原卷版)

2016-2020高考英语试题分类汇总-短文改错(原卷版)
2016-2020高考英语试题分类汇总-短文改错(原卷版)

2016-2020高考英语试题分类汇总-短文改错

(原卷版)

【2020年】

1.(2020·新课标Ⅰ)假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

Today I tried cooking a simply dish myself. I like eating frying tomatoes with eggs, and I thought it must to be easy to cook. My mom told me how to preparing it. First I cut the tomatoes into pieces but put them aside. Next I broke the eggs into a bowl and beat them quickly with chopstick. After that I poured oil into a pan and turned off the stove,I waited patiently unless the oil was hot. Then I put the tomatoes and the beaten eggs into pan together. "Not that way,"my mom tried to stop us but failed. She was right. I t didn’t tum out as I had wished.

2.(2020·新课标Ⅱ)假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

Thank you for your letter, what really made me happy. I’m glad to know that you’ve come China to learn kung fu in a school in my hometown. I’m surely you’ll have a good time. Actually, I start to learn kung fu when I was seven years old, for I have long been out of practice. Luckily, I will go home in two weeks for summer vacations. Then I can spare some time to learn it again, such that we can practice together on every day. Best of luck with yours learning kung fu in China. See you sooner.

3.(2020·新课标Ⅲ)假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

My mom is really concerning with the health of everyone in our families. In order to make surely all of us are in good health, and she makes specific plans for us. For example, every morning, my dad has to have the bowl of egg soup while I had to eat an apple. My dad don’t like the soup and I don’t enjoy apples. I t ell my mom that if we’re forced eat things, we may become ill.

But he insists on us eating healthy food. Understanding her good intentions, I eat all the food what is provided by Mom with appreciation.

【2019年】

1.【2019·全国卷I】

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:

1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。I became interesting in playing football thanks to a small accident. One afternoon where I was in primary

school, I was walking by the school playground. Suddenly football fell just in front of me but almost hit me. I stopped the ball and kicked it hardly back to the playground. To everyone`s surprising, the ball went into the net. All the football player on the playground cheered loudly, say that I had a talent for football. From now on, I started to play my football with classmates after school. I am a good player now.

2.【2019·全国卷II】

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:

1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。Since I was a kid, I`ve considered different job I would like to do. First, I wanted to be a fireman, whose

uniform looked so coolly. Then, when I was in the five grade, I wanted to be a teacher because I liked my English teacher too much. When I studied chemistry high school, I reconsidered mg goal or decided to be a doctor. They were two reasons for the decision. One was that I was amazing at the fact that a sick person could feel much more better after seeing a doctor. And the other is that I wanted to help people in need.

3.【2019·全国卷III】

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:

1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。I've had many dreams since I was a child. Now my dream is to opens a cafe. Though it may appear simple, it

required a lot of ideas and efforts. What I want is not just an ordinarily cafe but a very special one. I want my cafe have a special theme such as like "Tang Dynasty". In the cafe, customers will enjoy yourselves in the historical environment what is created for them. If I succeed in manage one, I will open more. I wish to have a chain of cafes in many different city. Each of my cafes will have a different theme and an unique style.

【2018年】

1.【2018·全国卷I】

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

During my last winter holiday, I went to countryside with my father to visit my grandparents. I find a big change there. The first time I went there, they were living in a small house with dogs, ducks, and another animals. Last winter when I went here again, they had a big separate house to raise dozens of chicken. They also had a small pond which they raised fish. My grandpa said last summer they earned quite a lot by sell the fish. I felt happily that their life had improved. At the end of our trip, I told my father that I planned to return for every two years, but he agreed.

the ∧find found another other here there chicken chickens which in where ∧或sell selling happily happy for but and 2.【2018·全国卷I I 】 假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文,文中共有10处语言错误,每句中最多有两处,每处错误仅涉及一个单词的增加、删改或修改。

增加:在缺词处加一个漏字符号(Λ),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:(1).每处错误及其修改均仅限一词;

(2).只允许修改10处,多者(从第11处起)不计分。

When I was little, Friday’s night was our family game night. After supper, we would play card games of all sort in the sitting room. As the kid, I loved to watch cartoons, but no matter how many times I asked to watching them, my parents would not to let me. They would say to us that playing card games would help my brain. Still I unwilling to play the games for them sometimes. I didn’t realize how right my parents are until I entered high school. The games my parents taught me where I was a child turned out to be very useful later in my life.Friday s Friday ’sort sorts the a

watching watch to us me was ∧for with are were where when 3.【2018·

全国卷III 】 假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文,文中共有10处语言错误,每句中最多有两处,每处错误仅涉及一个单词的增加、删改或修改。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

It was Monday morning, and the writing class had just begin. Everyone was silent, wait to see who would be called upon to read his and her paragraph aloud. Some of us were confident and eager take part in the class activity, others were nervous and anxious. I had done myself homework but I was shy. I was afraid that to speak in front of a larger group of people. At that moment, I remembered that my father once said, "The classroom is a place for learning and that include leaning from textbooks, and mistake as well." Immediate, I raised my hand.【2017年】

1.【2017·全国卷I 】

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:

1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

In the summer holiday following my eighteen birthday, I took driving lessons. I still remember how hard first day was. Before getting into the car, I thought I had learned the instructor’s orders, so once I started the car, my mind goes blank, I forgot what he had said to me altogether. The instructor kept repeat ing the word, “Speed up!” “Slow down!” “Turning left!” I was so much nervous that I could hardly tell which direction was left. A few minutes late, the instructor asked me to stop the car. It was a relief and I came to a suddenly stop just in the middle on the road.

eighteen eighteenth the/my so

but /yet goes went word words Turning Turn much late later suddenly sudden on of 2.【2017·

全国卷I I 】假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处;每处错误仅涉及一个单词的增加、删除或修改。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改的词。

注意:1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

Mr. and Mrs. Zhang all work in our school. They live far from the school, and it takes them about a hour and a half to go to work every day. In their spare time, they are interesting in planting vegetables in their garden, that is on the rooftop of their house. They often get up earlier and water the vegetables together. They have also bought for some gardening tools. beside, they often get some useful informations from the internet. When summer came, they will invite their students pick the vegetables!

3.【2017·全国卷III】

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

When I look at this picture of myself. I realize of how fast time flies. I had grown not only physically, and also mentally in the past few years. About one month after this photo was took, I entered my second year of high school and become a new member of the school music club. Around me in picture are the things they were very important in my life at that time: car magazines and musical instruments. I enjoyed studying difference kinds of cars and planes, playing pop music, and collecting the late music albums. This picture often brings back to me many happy memories of your high school days.

of had

have and

but

took

taken

become

became the/this

they

that/which

difference

different

late

latest

your

my

【2016年】

1.【2016·全国新课标I】短文改错

修改:在错的词下划一横线,并在该词下面写出修改后的词。注意:1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

My uncle is the owner of a restaurant close to that 1 live .Though not very big ,but the restaurant is popular in our area .It is always crowded with customers at meal times .Some people even had to wait outside My uncle tells me that the key to his success is honest. Every day he makes sure that fresh vegetables or high quality oil are using for cooking. My uncle says that he never dreams becoming rich in the short period of time. Instead, he hopes that our business will grow steady.

2.【2016·全国新课标II】短文改错(共10小题,每小题1分,满分10分)

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(﹨)划掉。

删除:在错的词下划一横线,并在该词下面写出修改后的词。

注意:

1.每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

The summer holiday is coming. My classmates and I are talking about how to do during the holiday. We can chose betwee n staying at home and take a trip. If we stay at home, it is comfortable but there is no need to spend money. But in that case, we will learn little about world. If we go on a trip abroad, we can broaden you view and gain knowledges we cannot get from books. Some classmates suggest we can go to places of interest nearby. I thought that it is a good idea. It does not cost many, yet we can still learn a lot.

3.【2016·全国新课标III】短文改错(共10小题;每小题1分,满分10分)

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

The teenage year from 13 to 19 were the most difficult time for me . They were also the best and worse years in my life . At the first, I thought I knew everything and could make decisions by yourself. However, my parents didn’t seem to think such. They always tell me what to do and how to do it. At one time , I even felt my parents couldn’t understand me so I hoped I could be freely from them. I showed them I was independent by wear strange clothes. Now I am leaving home to college. At last, I will be on my own, but I still want to have my parents to turn to whenever need help.

【答案】

51.year—years

52.worse—worst

53.the去掉

54.yourself—myself

55.such—so

56.tell—told

57.freely—free

58.wear—wearing

59.to—for

60.I ∧need

4.【2016·浙江】下面短文中有10处语言错误。请在有错误的地方增加、删减或修改某个单词。

增加:在缺词处加一个漏字符号(∧),并在其下面写上该加的词。

删除:把多余的词用斜线(/)划掉。

修改:在错的词下划一横线,并在该词下面写上修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

When I was a very young children, my father created a regular practice I remember well years late. Every time he arrived home at end of the day,we’d greet her at the door. He would ask who we was and pretend not to knowing us, Then he and my mother would have had a drink while she prepared dinner and they would talk about his day and hers. While they chat, my father would lift my sister and me up to sit in the top of the fridge. It was both excited and frightening to be up there!

My sister and I thought he was so cool for putting us there.

新标准小学英语单词分类汇总

小学英语单词分类汇总 1. 动物类(animals) cat猫 pig猪 dog狗 rabbit兔子 mouse老鼠elephant大象 panda熊猫tiger老虎 duck鸭子 fish鱼 bird鸟 monkey猴子 chicken小鸡 lion狮子sheep绵羊 horse马 giraffe长颈鹿 goat山羊 wolf狼 goose鹅 snake蛇bear熊 kangaroo袋鼠cow奶牛 2. 颜色(colour) blue蓝 red红 white白 yellow黄 green绿 black黑 pink粉红purple紫 brown棕orange橙 3. 身体部位(body) head 头 hair头发eye眼睛 ear耳朵 nose鼻子 face脸neck 脖子arm手臂 leg腿 foot脚 mouth嘴 hand手 finger手指toe 脚趾 4. 数字(numbers) one一 two二 three三 four四 five五 six六 seven七 eight八nine 九 ten 十 eleven十一twelve十二thirteen十三 fourteen十四 fifteen十五 sixteen十六 seventeen十七 eighteen十八 nineteen十九twenty二十 twenty-one二十一 thirty三十 forty四十 fifty五十 sixty六十seventy七十eighty八十ninety九十 one hundred一百 first 第一 second第二third第三forth第四fifth第五sixth第六seventh第七eighth第八 ninth第九 tenth第十 5. 时间日期(time) year年 season四季 week周 A.M. (a.m.) morning上午

2018年高考化学专题分类汇总物质的分类 2物质的俗称试题

1 / 5 物质的分类-2物质的俗称 (2018北京)7.氢氧化钠是重要的化工原料,其俗称是 A.纯碱 B.烧碱 C.小苏打 D.熟石灰 (2018常州)5.下列物质的俗名与化学式一致的是 A.食盐:CaCl 2B.苛性钠:NaOH C.纯碱:NaHCO 3D.生石灰:Ca(OH) 2(2018重庆升学)12.下列各选项中物质的名称或俗名与括号内的化学式一致的是A.高锰酸钾(KMnO 4)B.熟石灰(CaO) C.硫酸铁(FeSO 4)D.烧碱(Na 2CO 3)(11泸州)7.下列物质的俗称与化学式不相符合的是(B)A.干冰CO 2B.生石灰Ca(OH) 2C.烧碱NaOH D.食盐NaCl (2018聊城)13.为了打造“江北水城,运河古都”,光岳楼周边仿古建筑的重建需要大量的氢氧化钙。氢氧化钙的俗名是 A.火碱 B.纯碱 C.熟石灰 D.生石灰 (2018玉溪)11.下列有关物质的化学式、名称、俗名完全正确的是(B) A.NaOH、氢氧化钠、纯碱 2 / 5 C.CCl 4、甲烷、沼气B.NaCl、氯化钠、食盐

D.Na 2CO 3、碳酸钠、火碱 (2018湘潭)9.下列物质的俗名与其化学式不相符的—项是:A.干冰CO 2B.酒精C 2H 50H C.纯碱Na0H D.石灰石CaC18 (2018株洲毕业)9.下列物质的俗名和类别全部正确的是 选项 化学 式 俗名烧碱酒精熟石灰小苏打 酸 类别盐氧化物碱 (2018岳阳)4.下列物质的俗名与化学式不一致的是 A.烧碱——NaOH 3 / 5 C.干冰——H 2OB.小苏打——NaHCO 3 D.生石灰——CaO A Na 2CO 3B C 2H 5OHC Ca(OH) 2D NaHCO 3 (2018泰安毕业)16.物质的化学式和相应的名称均正确的是A.O

高考化学试题分类汇编:化学计算 doc

2010高考化学试题分类汇编:化学计算 1.(2010全国卷1).下列叙述正确的是 A .在醋酸溶液的pH a =,将此溶液稀释1倍后,溶液的pH b =,则a b > B .在滴有酚酞溶液的氨水里,加入4NH Cl 至溶液恰好无色,则此时溶液的pH 7< C .31.010mol/L -?盐酸的pH 3.0=,81.010mol/L -?盐酸的pH 8.0= D .若1mL pH 1=的盐酸与100mL NaOH 溶液混合后,溶液的pH 7=则NaOH 溶液的pH 11= 【解析】A 若是稀醋酸溶液稀释则C(H +)减小,pH 增大,b >a ,故A 错误;B 酚酞的变色范围是pH= 8.0~10.0(无色→红色),现在使红色褪去,pH 不一定小于7,可能在7~8之间,故B 错误;C 常温下酸的pH 不可能大于7,只能无限的接近7;D 正确,直接代入计算可得是正确,也可用更一般的式子:设强酸pH=a ,体积为V 1;强碱的pH=b ,体积为V 2,则有10-a V 1=10-(14-b)V 210142 1-+=?b a V V ,现在V1/V2=10-2,又知a=1,所以b=11 【答案】D 【命题意图】考查弱电解质的稀释,强酸的无限稀释,指示剂的变色范围,强酸与强碱的混合pH 的计算等基本概念 【点评】本题在第一轮复习至第三轮复习无时不在强调的基本问题考查就是第二册第三章的问题,这次居然没有考离子浓度大小比较,而考这些,很简单,大家都喜欢! 2.(2010全国卷1)12.一定条件下磷与干燥氯气反应,若0.25g 磷消耗掉314mL 氯气(标准状况),则产物中PCl 3与PCl 5的物质的量之比接近于 A .1:2 B .2:3 C .3:1 D .5:3 【解析】设n(PCl 3)=X mol, n(PCl 5)=Y mol ,由P 元素守恒有:X+Y=0.25/31≈0.008……①;由Cl 元素守恒有3X+5Y=(0.314×2)/22.4≈0.028……②,联立之可解得:X=0.006,Y=0.002故选C 【命题意图】考查学生的基本化学计算能力,涉及一些方法技巧的问题,还涉及到过量问题等根据化学化学方程式的计算等 【点评】本题是个原题,用百度一搜就知道!做过多遍,用的方法很多,上面是最常见的据元素守恒来解方程法,还有十字交叉法,平均值法、得失电子守恒等多种方法,此题不

人教版三年级起点小学英语单词分类汇总

一、人体(body) foot脚 head头 face脸 hair头发 nose鼻子 mouth嘴 eye眼睛 ear耳朵 arm手臂 hand手 finger 手指 leg腿 tail尾巴 二、颜色(color) red红 blue蓝 yellow黄 green绿 white白 black黑 pink粉红 purple紫 orange橙 brown棕 三、学习用品 (school things) pen钢笔 pencil铅笔 pencil-case铅笔盒 ruler尺子 book书 bag包comic book漫画书 post card明信片 newspaper报纸 schoolbag书包eraser橡皮 crayon蜡笔 sharpener卷笔刀 story-book故事书notebook笔记本 Chinese book语文书 English book英语书 math book数学书 magazine杂志 dictionary词典 四、动物(animals) cat猫 dog狗 pig猪 duck鸭 rabbit兔 horse马 elephant大象ant蚂蚁 fish鱼 bird鸟 eagle鹰 beaver海狸 snake蛇 mouse老鼠squirrel松鼠 kangaroo袋鼠 monkey猴panda熊猫 bear熊 lion狮子tiger老虎 fox狐狸 zebra斑马deer鹿 giraffe长颈鹿 goose鹅hen母鸡 turkey火鸡 lamb小羊 sheep绵羊 goat山羊 cow奶牛donkey驴 squid鱿鱼 lobster龙虾 shark鲨鱼 seal海豹 sperm whale抹香鲸 killer whale虎鲸 五、人物(people) friend朋友 boy男孩 girl女孩 mother母亲 father父亲 sister姐妹 brother兄弟 uncle叔叔,舅舅 aunt姑姑 man男人 woman女人 Mr. 先生 Miss小姐 lady女士 mom妈妈 dad爸爸 parents父母grandparents祖父母 grandma/grandmother(外)祖母 grandpa/grandfather(外)祖父 cousin堂(表)兄弟;堂(表)姐妹 son儿子 daughter女儿 baby婴儿 kid小孩 classmate同学 queen女王 visitor参观者neighbour邻居 principal校长 university student大学生 pen pal笔友 tourist旅行者 people人物 robot机器人 六、食品、饮料(food & drink) rice米饭 bread面包 beef牛肉 milk牛奶 water水 egg蛋 fish鱼 tofu豆腐 cake蛋糕 hot dog热狗 hamburger汉堡包 French fries炸薯条 cookie曲奇 biscuit饼干 jam果酱 noodles面条 meat肉 chicken鸡肉 pork猪肉 mutton羊肉 vegetable蔬菜 salad沙拉 soup汤 ice冰 ice-cream冰淇淋 Coke可乐 juice果汁 tea茶 coffee咖啡 breakfast早餐 lunch午餐 dinner/supper晚餐 meal一餐

2019高考英语【短文改错】专题训练

短文改错专题 一.改错题型特点: 高考短文改错是知识和能力的综合测试题型。主要考查考生在语篇中综合运用英语知识的准确性及词、句、篇和语法的综合水平。高考短文改错设置的考点灵活多变,知识层次多,覆盖面广,包括词法、句法、行文逻辑以及语篇结构等,是一种在较高层次上考查考生对英语知识的掌握和语言综合运用能力的测试题型。 二.短文改错常见考点设置: 考点1:名词 命题特点: 本来用复数,却用单数;本来用单数,却用复数。 记住常考的几个不可数名词:news, work(工作), advice, fun, progress, information, luck, weather, music, health, change(零钱),baggage(行李), luggage(行李),furniture, jewellery, equipment等 改正方法: (1)根据名词前的修饰限定成份(2)根据上下文的逻辑关系. 1. She said that she and my schoolmate all wished me success. 2. After class we become stranger at once. 3. They want me to devote all my time to my studies so that I’ll get marks in all my subject. 4. On the way up I was busy taking picture since the scenery was so beautiful. 5. There are advantage for students to work while studying at school. 6. Now we can get millions of informations from the Internet. 7. He had no ideas that the kitchen was not for guests. 8. She is one of the most intelligent girl in our class. 9. I looked at his other hands. 10. Most of them are peasant and some often go fishing in the sea. 11. We have made great progresses with Mr. Liu teaching us. 12. Head teacher Guy Holloway said the new rules should help students get higher grade. 13. He was tall, with broad shoulder and a beard that turned from black toward gray over the years. 14. He’s getting married next month and decides to buy some furnitures. 考点2:代词 命题特点:1.男女性代词用反;2.单数指代复数;3.代词词性用错;4.缺少人称代词。 改正方法: 根据上下文的逻辑关系以及人称代词的数和格的一致问题。 15. Rose is such a kind girl that we all like him very much. 16. The Smiths did his best to make me feel at home. 17. I have a good friend who’s name is Liu Mei. 18. It was about noon when we arrived at the foot of the mountain. The three of them were very excited. 19. Soon I began to enjoy talking to myself as I was learning to express me in simple English. 20. My story book is much more interesting than her. 21. One day I wrote a little story and showed to my teacher. 22. Some students may also save up for our college or future use. 23. Do you think necessary for you to learn Japanese well? 24. I dressed me quickly and hurried out the house. 25. You’d better keep that he said in mind. 26. He has three children, two of them are teachers. 27. The population of China is much larger than it of the USA.

全国高考化学化学反应原理的综合高考真题分类汇总

全国高考化学化学反应原理的综合高考真题分类汇总 一、化学反应原理 1.研究+6价铬盐不同条件下微粒存在形式及氧化性,某小组同学进行如下实验: 已知:Cr2O72-(橙色)+H2O2CrO42-(黄色)+2H+△H=+13.8kJ/mol,+6价铬盐在一定条件下可被还原为Cr3+,Cr3+在水溶液中为绿色。 (1)试管c和b对比,推测试管c的现象是_____________________。 (2)试管a和b对比,a中溶液橙色加深。甲认为温度也会影响平衡的移动,橙色加深不一定是c(H+)增大影响的结果;乙认为橙色加深一定是c(H+)增大对平衡的影响。你认为是否需要再设计实验证明?__________(“是”或“否”),理由是 ____________________________________________________。 (3)对比试管a、b、c的实验现象,可知pH增大 2- 27 2- 4 c(Cr O) c(CrO) _____(选填“增大”, “减小”,“不变”); (4)分析如图试管c继续滴加KI溶液、过量稀H2SO4的实验现象,说明+6价铬盐氧化性强弱为Cr2O72-__________CrO42-(填“大于”,“小于”,“不确定”);写出此过程中氧化还原反应的离子方程式_________。 (5)小组同学用电解法处理含Cr2O72-废水,探究不同因素对含Cr2O72-废水处理的影响,结果如表所示(Cr2O72-的起始浓度,体积、电压、电解时间均相同)。 实验ⅰⅱⅲⅳ 是否加入 Fe2(SO4)3 否否加入5g否 是否加入H2SO4否加入1mL加入1mL加入1mL 电极材料阴、阳极均为石 墨 阴、阳极均为石 墨 阴、阳极均为石 墨 阴极为石墨, 阳极为铁 Cr2O72-的去除率/%0.92212.720.857.3 ①实验ⅱ中Cr2O72-放电的电极反应式是________________。 ②实验ⅲ中Fe3+去除Cr2O72-的机理如图所示,结合此机理,解释实验iv中Cr2O72-去除率提高较多的原因_______________。

2020高考化学试题分类汇编——电化学基础

2020高考化学试题分类汇编电化学基础 1.〔2018全国卷1〕右图是一种染料敏化太阳能电池的示意图。电池的一个点极由有机光敏燃料〔S〕涂覆在TiO2纳米晶体表面制成,另一电极由导电玻璃镀铂构成,电池中发生的反应为: TiO2/S h TQ2/S 〔激发态〕 TiO 2/S TiO 2/S+ +e- l3+2e 3I 2TiO 2/S 3I 2TiO2/S+I3 以下关于该电池表达错误的选项是: A. 电池工作时,是将太阳能转化为电能 B. 电池工作时,I离子在镀铂导电玻璃电极上放电 C. 电池中镀铂导电玻璃为正极 D. 电池的电解质溶液中I-和I 3-的浓度可不能减少 【解析】B选项错误,从示意图可看在外电路中电子由负极流向正极,也即镀铂电极做 正极,发生还原反应:13-+2e-=3I -; A选项正确,这是个太阳能电池,从装置示意图可看出是个原电池,最终是将光能转化为化学能,应为把上面四个反应加起来可知,化学物质并没 有减少;C正确,见B选项的解析;D正确,此太阳能电池中总的反应一部分实质确实是: 还原. 氧化 I「3I-的转化〔还有I 2+| 一二|「〕,另一部分确实是光敏有机物从激发态与基态的 相互转化而已,所有化学物质最终均不被损耗! 【答案】B 【命题意图】考查新型原电池,原电池的两电极反应式,电子流向与电流流向,太阳能 电池的工作原理,原电池的总反应式等,还考查考生变通能力和心理素养,能否适应生疏的 情境下应用所学知识解决新的咨询题等 【点评】此题立意专门好,然而考查过为单薄,而且取材不是最新的,在3月份江苏省 盐都市高三第二次调研考试化学试题第17题〔3〕咨询,与此题极为相似的模型,这对一些考生显得不公平!

北京小学英语单词分类汇总

单词梳理 名词 生活用品:bag包,bed床,box盒子,key钥匙,desk 书桌,table桌子,window窗户,wall 墙,table 桌子,chair 椅子,phone 电话,fridge 冰箱, bed 床,clock 钟表,watch 手表,pill药片, matter事情, X-ray X射线, station加油站, sign标记, vase 花瓶,wire电线, gas气体, email 电子邮件,camera 照相机 , zipper拉链, change 找回的零钱,net 网,sofa沙发,toothbrush牙刷,toothpaste牙膏,shampoo 洗发水,soap肥皂,bottle瓶子,housework家务,money,air空气, 餐具:cup杯子,dish盘子,spoon勺子,bowl碗,knife刀,chopsticks筷子 学习类:pen钢笔. book书.bag 书包.desk 书桌.marker彩笔, pencil铅笔, eraser橡皮, pencil 铅笔,ruler尺子word词, homework 家庭作业,study 学习,读书,class班级,school,学校,classroom 教室, book书,lesson课,subject课程,学科,science 科学,textbook 教科书,maths 数学,English,英语,art 美术,Chinese语文,tongue 语言,PE体育课,answer回答/答案,question问题,blackboard黑板,computer计算机,phone手机,call电话,bookcase书架,glue 胶水,times乘,plus加,minus减,scissors剪刀,crayon蜡笔/彩色笔,pencil sharpener削笔刀, 交通工具:bike bicycle自行车,boat船,ship船,car小汽车,van货车, bus 公共汽车taxi 出租车,van 小货车,plane 飞机,train 火车,truck 卡车 subway 地铁,jeep 吉普车,motorbike 摩托车 服装:coat外衣,skirt裙子,T-shirt T恤衫, shirt衬衫/内衣, uniform制服, vest 马甲,T-shirt T恤衫, cap,鸭舌帽, hat有帽沿的帽子,jacket 夹克衫, shoe 鞋, sock 短袜,coat 外套,dress 连衣裙,shorts 短裤,glass(glasses)眼 镜,blouse宽松的上衣/睡衣,gloves手套, jeans牛仔裤,sweater毛衣, pants短裤,raincoat雨衣,boot靴子,slipper拖鞋,sandals凉鞋, 称呼/家庭成员: family家庭,grandpa爷爷,grandma奶奶, parent父亲或母亲,mom 妈妈,dad 爸爸, mother母亲, father父亲, uncle叔叔, aunt阿姨,cousin 堂 兄弟姐妹,表兄弟姐妹,brother,兄弟, sister 姐姐妹妹,niece 侄女,外 甥女,nephew,外甥,侄子,daughter 女儿,son 儿子,child孩子/children

高考英语专题短文改错二十篇1-20(附答案)

1. Three friends and I was driving on a highway. While we were going at least 50 miles per hour, we passed over a car. It had broken down, stopped on the side of the road. My friend slows down, and pulled behind the other car. He got out of the car immediate and before I knew it he was helping the other person push the car down the road to a spot where wasn’t so close to the passing cars. From the way they were pushing the car, it looked as if my friend was pushing them all by himself. I thought my friend help a complete stranger like this was a great thing, but I won’t forget his good nature or character. 2. Dear Brad, I’m very glad to hear from you. In your last letter you ask about the post-80s in China. Actually I am the boy who belongs to this group. Comparing with our parents, life for us is getting much hard. The job market is tough and the house is expensively to afford. Now many girls prefer to marry with a man who owns a house and a car. Therefore, I don’t think love built on house and cars is true love, and I doubt how long it will last. As a matter of fact, though situations are tough today, a lot of we post-80s are making great efforts live a good life. I believe we will have a nice future. Li Hua 3. Good morning, ladies and gentlemen, Some of us are having problems about our parents, as they often look into our school bags or read our diaries. I fully understand why we are comfortable about it, but it is no need to feel too sadly. Our parents are checking in our bags or diaries to make sure we’re not getting into troubles. They have probably heard of some horrible stories about other kids and thinking we might do the same. Or perhaps they just want to connect with us and are doing it all wrong. My suggestion is: Tell them we want them to trust us as many as we’d like to trust them. If you don’t think you can talk to them, write them a letter and leave it lie around --- they are bound to read it. Thank you!

高考化学专题分类汇总 溶液的酸碱性和PH试题

高考化学专题分类汇总 溶液的酸碱性和PH 试题 (2011天津毕业)6.生活中一些物质的pH 如下表所示, 其中显酸性的是( ) 番茄汁 糖水 牙膏 肥皂水 pH 4 7 9 10 A .番茄汁 B .糖水 C .牙膏 D .肥皂水 (2011清远)8.根据右表判断,肉类变质过程中酸碱性的变化趋势是 A .酸性变弱 B .碱性变弱 C .酸性变强 D .酸性不变 (2011青岛)14.不同物质的溶液酸碱性不同。根据下表中所列物质pH 的情况判断,下列说法中正确的是 物质 盐酸 硫酸镁溶液 氯化钠溶液 蒸馏水 碳酸钾溶液 氢氧化钙溶液 pH 小于7 小于7 等于7 等于7 大于7 大于7 A.pH 小于7的一定是酸溶液 B.pH 大于7的一定是碱溶液 C.pH 等于7的一定是水 D.盐的溶液可能显酸性、碱性或中性 (2011娄底毕业)14.家庭生活中一些常见物质的pH 如下: 物质 食醋 牛奶 食盐水 牙膏 肥皂水 pH 2~3 6~7 7 8~9 9~10 当我们被蚊虫叮咬后,蚊虫能在人的皮肤内分泌蚁酸(具有酸的性质),从而使皮肤肿痛。要减轻痛痒,应在叮咬处涂抹下列物质中的 A .食醋 B .牛奶 C .食盐水 D .牙膏或肥皂水 (2011聊城)19.下列人体体液中酸性最强的是 A B C D 体液 唾液 血液 胆汁 胃液 pH 范围 6.6~ 7.1 7.35~7.45 6.8~7.4 0.8~1.5 (2011北京)11.小刚测定了下列4种日用品的pH 值,其中呈酸性的是 日用品 A.洁厕灵 B.洗涤灵 C.洗发水 D.消毒液 pH 1 7 9 12 (2011重庆江津区)6.生活中一些食品或用品的近似pH 如下表,以下说法正确的是 食品或用品 食 醋 泡 菜 牙 膏 草木灰 pH 2~3 3~4 8~9 10~11 A. 牙膏是酸性物质 B. 胃酸过多的人不宜吃泡菜 C. 草木灰可以降低土壤碱性 D. 食醋能使石蕊试液变蓝 (2011厦门)6.某课外活动小组取刚降到地面的雨水水样,用pH 计(测pH 的仪器)每隔5 名称 新鲜肉 次鲜肉 变质肉 pH 5.8~6.2 6.3~ 6.6 >6.7

高考化学专题分类汇总 图像试题试题

图像试题 (2011烟台毕业)19.下列四个图像能正确反映其对应实验操作的是 ①②③④ (A)①高温煅烧一定质量的石灰石 (B)②用等质量、等浓度的双氧水分别制取氧气 (C)③向一定体积的稀盐酸中逐滴加入氢氧化钠溶液 (D)④某温度下,向一定量饱和硝酸钾溶液中加人硝酸钾晶体 (2011潍坊毕业)16.下图是对四个实验绘制的图像,其中实验结果与图像对应正确的是 A.某温度下,向一定量接近饱和的硝酸钾溶液中不断加入硝酸钾晶体 B.将稀H2SO4滴入一定量的BaCl2溶液中 C.将一定质量的氯酸钾和二氧化锰放入试管中充分加热 D.向pH=13的NaOH溶液中加水稀释 (2011南宁)19.下列图象与对应实验完全吻合的是 A.①往一定量的盐酸中滴加NaOH溶液至过量 B.②将一定量的不饱和KNO3溶液恒温蒸发水 C.③向一定量CuSO4溶液和稀硫酸的混合溶液中滴加NaOH溶液 D.④用两份等质量等溶质质量分数的过氧化氢溶液制取氧气(甲加少量MnO2) (2011遂宁)32.下列四个图象分别对应四种操作(或治疗)过程,其中图象能正确表示对

应操作(或治疗)的是 A B C D A .将一定质量的硝酸钾不饱和溶液恒温蒸发水份,直至有少量晶体析出 B .常温下,相同质量的锌和铁分别与足量的溶质质量分数相同的稀硫酸充分反应 C .向硫酸和硫酸铜的混合溶液中加入氢氧化钠溶液直至过量 D .服用胃舒平[主要成分Al(OH)3]治疗胃酸过多 (2011绥化)13.下列图像能正确反映其对应关系的是( ) A.向一定量pH=3的硫酸溶液中不断加水稀释 B.向一定量的饱和石灰水中不断加入生石灰 C.向盛有相同质量的镁和氧化镁的烧杯中分别加入相同溶质质量分数的稀盐酸至过量 D.将一定量的木炭放在盛有氧气的密闭容器中加热至燃烧 (2011黑龙江龙东地区)14.下列图像能正确反映所对应叙述关系的是 ( ) A.向pH=3的溶液中不断加水 B.向锌粒中逐渐加入稀硫酸 C.向H 2SO 4和CuSO 4混合液中滴加NaOH 溶液 加水的量/g A 反应时间/s B NaOH 溶液质量/g C 反应时间/s D A B C D

小学英语单词分类汇总(人教版)[1]

小学英语单词大全(人教版) 一、学习用品 pen钢笔pencil铅笔pencil-case(pencil-box)铅笔盒 ruler尺子eraser(rubber)橡皮crayon 蜡笔sharpener卷笔刀book书bag(schoolbag)书包 story-book故事书comic book连环漫画册notebook 笔记本 post card明信片newspaper 报纸magazine杂志 二、人体 head头face脸hair头发nose鼻子mouth嘴eye眼睛ear耳朵arm胳膊shoulder肩膀hand 手finger手指leg腿knee膝盖foot脚toe脚趾tail尾巴 三、动物 cat猫dog狗pig猪duck鸭子rabbit兔子horse马elephant大象ant 蚂蚁kangaroo袋鼠monkey猴子fish鱼bird鸟panda熊猫bear熊lion狮子tiger老虎sheep绵羊goat山羊cow奶牛donkey驴 四、人物 friend朋友boy男孩girl女孩sister姐妹brother兄弟mother(mom)妈妈father(dad)爸爸uncle叔叔man男人woman 女人Mr先生Miss小姐,老师lady女士parents父母grandparents 祖父母grandpa爷爷,外公grandma奶奶,外婆people人 aunt阿姨;姑妈;伯母;舅妈son儿子principal校长 cousin堂兄弟姊妹;表兄弟姊妹classmate同班同学

university student大学生pen pal 笔友pal朋友,伙伴 五、职业 teacher老师student学生doctor医生nurse护士driver司机farmer农夫singer歌手writer作家actor 男演员actress女演员artist艺术家,美术家TV reporter电视台记者engineer工程师accountant会计师policeman警察salesperson 售货员cleaner 清洁工baseball player 棒球运动员assistant助手六、颜色 red红色blue蓝色yellow黄色green绿色white白色black黑色pink粉色purple紫色orange橘色brown棕色 七、食品 rice米饭bread面包beef牛肉milk牛奶water水egg蛋fish 鱼肉tofu豆腐cake蛋糕hot dog热狗hamburger汉堡包noodles面条meat肉chicken鸡肉pork猪肉mutton羊肉vegetable蔬菜soup汤ice-cream冰激凌Coke可乐juice果汁tea 茶coffee咖啡(breakfast 早餐lunch午餐dinner晚餐,正餐) 八、水果和蔬菜 apple苹果banana香蕉pear梨orange橘子peach桃子grape葡萄watermelon西瓜strawberry草莓coconut椰子pineapple菠萝eggplant茄子green beans青豆,绿豆,四季豆cucumber 黄瓜tomato番茄potato土豆onion 洋葱carrot胡萝卜cabbage 卷心菜九、衣服

年高考化学专题分类汇总 化学与环境-5综合试题

2011年高考试题按专题分类汇总化学与环境-5综合 (2011广安升学)20、下列行为与“绿色环保”理念不相符的是 A、分类回收、利用垃圾,减少资源浪费 B、推广使用一次性木筷,减少疾病传染 C、开发太阳能、风能等新能源,减少使用化石能源 D、使用催化净化装置,减少汽车尾气的污染 (2011山东东营)3.下列因果关系不正确的是 (2011泰安毕业)1.空气的成分中,能导致温室效应的气体是 A.氮气 B.氧气 C. 二氧化碳 D. 稀有气体 (2011永州)16.人类只有一个地球,保护环境,人人有责。下列说法能达到相应目的是 A.推广使用无氟冰箱有利于防止“臭氧空洞” B.工厂用高烟囱排放废气防止“酸雨” C.使用车用乙醇汽油防止“温室效应” D.及时焚烧废弃塑料减少“白色污染” (2011营口)2. “低碳生活,保护环境”已成为社会发展的主题,下述不符合此主题的是( )。 A. 使用可降解塑料袋 B. 发展快速公交,减少私车出行 C. 积极开发和利用新能源 D. 大量使用化肥提高粮食产量 (2011义乌毕业)1. 保护地球是每个公民应尽的义务,下列做法对人类的生存环境会造成危害的是 A.回收处理废旧电池 B.使用无磷洗衣粉 C.冰箱、空调使用含氯氟烃的制冷剂 D.工业废水经处理达标后再排放(2011徐州升学)11..2011年,我市“创模”工作取得重大突破,国家环保部授予徐州市“国家环境保护模范城市城市”称号。为巩固成果,下列措施不可行 ...的是() A.将麦秸大面积露天焚烧 B.多植树造林来防止扬尘污染 C.工业废水达标处理再排放 D.减少使用一次性的塑料制品 (2011芜湖)7.爱护环境,关注自己和他人健康,是每个公民的义务。下列做法正确的是() A.室内公共场所禁止吸烟,其他场所可以任意吸烟 B.核能不安全,禁止使用核能 C.加速石油、煤炭的开采,快速提高人类生活质量 D.限制或禁止燃放烟花爆竹 (2011无锡)6.2009年12月在哥本哈根召开了联合国气候变化大会,气候变化问题进一步成为人类关注的热点.下列认识不正确的是( )

全部高中化学高考试题分类汇编——物质的量全国通用

09年高考化学试题分类汇编——物质的量 1.(09年福建理综·8)设N A为阿伏伽德罗常数,下列叙述正确的是 A.24g镁的原子量最外层电子数为N A B.1L0.1mol·L-1乙酸溶液中H+数为0.1N A C.1mol甲烷分子所含质子数为10N A D.标准状况下,22.4L乙醇的分子数为N A 答案:C 2.(09年广东化学·6)设N A 代表阿伏加德罗常数(N A )的数值,下列说法正确的是A.1 mol 硫酸钾中阴离子所带电荷数为N A B.乙烯和环丙烷(C3H6 )组成的28g混合气体中含有3N A 个氢原子 C.标准状况下,22.4L氯气与足量氢氧化钠溶液反应转移的电子数为N A D.将0.1mol氯化铁溶于1L水中,所得溶液含有0.1N A Fe3+ 答案:C 3.(09年广东理基·20)设N A代表阿伏加德罗常数(N A)的数值,下列说法正确的是A.22.4 L Cl2中含有N A个C12分子 B.1 L 0.1 mol·L-1 Na2SO4溶液中有0.1 N A个Na+ C.1 mol H2与1 mol C12反应生成N A个HCl分子 D.1 mol Ca变成Ca2+时失去的电子数为2N A 答案:D 4.(09年海南化学·8)下列叙述正确的是(用N A代表阿伏加德罗常数的值)A.2.4g金属镁变为镁离子时失去的电子数为0.1N A B.1molHCl气体中的粒子数与0.5 mo1/L盐酸中溶质粒子数相等 C.在标准状况下,22.4LCH4与18gH2O所含有的电子数均为10 N A D.CO和N2为等电子体,22.4L的CO气体与lmol N2所含的电子数相等 答案:C 5.(09年江苏化学·4)用N A表示阿伏加德罗常数的值。下列叙述正确的是A.25℃时,pH=13的1.0L Ba(OH)2溶液中含有的OH-数目为0.2N A B.标准状况下,2.24L Cl2与过量稀NaOH溶液反应,转移的电子总数为0.2N A C.室温下,21.0g乙烯和丁烯的混合气体中含有的碳原子数目为1.5N A

PEP小学英语三至六年级英语单词汇总表(分类)

PEP小学英语三至六年级英语单词分类汇总表 一、学习用品(school things)pen钢笔 pencil铅笔 pencil-case铅笔盒 ruler尺子 book书 bag包 comic book漫画书 post card明信片 newspaper报纸 schoolbag书包 eraser橡皮 crayon蜡笔 sharpener卷笔刀 story-book故事书 notebook笔记本 Chinese book语文书 English book英语书 math book数学书 magazine杂志 dictionary词典 二、人体(body) foot脚head头 face脸hair头发 nose鼻子mouth嘴 eye眼睛ear耳朵 arm手臂hand手 finger手指leg腿 tail尾巴 三、颜色(colours) red红blue蓝 yellow黄green绿 white白black黑 pink粉红purple紫 orange橙brown棕 四、动物(animals) cat猫dog狗 pig猪duck鸭 rabbit兔horse马elephant大象ant蚂蚁 fish鱼bird鸟 eagle鹰beaver海狸 snake蛇mouse老鼠squirrel松鼠kangaroo袋鼠monkey猴panda熊猫bear熊lion狮子 tiger老虎fox狐狸 zebra斑马deer鹿 giraffe长颈鹿goose鹅 hen母鸡turkey火鸡 lamb小羊sheep绵羊 goat山羊cow奶牛 donkey驴squid鱿鱼 lobster龙虾shark鲨鱼 seal海豹 sperm whale抹香鲸 killer whale虎鲸 五、人物(people) friend朋友 boy男孩 girl女孩 mother母亲 father父亲 sister姐妹 brother兄弟 uncle叔叔;舅舅 man男人 woman女人 Mr先生 Miss小姐 lady女士;小姐 mom妈妈 dad爸爸 parents父母 grandma/grandmother(外)祖 母 grandpa/grandfather(外)祖 父 aunt姑姑 cousin堂(表)兄弟;堂(表) 姐妹 son儿子 baby婴儿 kid小孩 classmate同学 queen女王 visitor参观者 neighbour邻居 principal校长 university student大学生 pen pal笔友 tourist旅行者 people人物 robot机器人 六、职业(jobs) teacher教师 student学生 doctor医生 nurse护士 driver司机 farmer农民 singer歌唱家 writer作家 actor男演员 actress女演员 artist画家 TV reporter电视台记者 engineer工程师 accountant会计 policeman(男)警察 salesperson销售员 cleaner清洁工 baseball player棒球运动员 assistant售货员 policeman警察 七、食品、饮料(food&drink) rice米饭bread面包 beef牛肉milk牛奶 water水egg蛋 fish鱼tofu豆腐 cake蛋糕hot dog热狗 hamburger汉堡包 French fries炸薯条 cookie曲奇biscuit饼干 jam果酱noodles面条 meat肉chicken鸡肉 pork猪肉mutton羊肉 vegetable蔬菜 salad色拉soup汤 ice冰 ice-cream冰淇淋 Coke可乐juice果汁 tea茶coffee咖啡 breakfast早餐 lunch午餐dinner晚餐 八、水果、蔬菜 (fruit&vegetable) apple苹果 banana香蕉

2020-2021全国高考化学 化学键的综合高考模拟和真题分类汇总含详细答案

2020-2021全国高考化学化学键的综合高考模拟和真题分类汇总含 详细答案 一、化学键练习题(含详细答案解析) 1. 煤气中主要的含硫杂质有H2S以及COS(有机硫),煤气燃烧后含硫杂质会转化成SO2从 而引起大气污染。煤气中H2S的脱除程度已成为其洁净度的一个重要指标。回答下列问题: (1)将H2S通入FeCl3溶液中,该反应的还原产物为___________。 (2)脱除煤气中COS的方法有Br2的KOH溶液氧化法、H2还原法以及水解法等。 ①COS的分子结构与CO2相似,COS的电子式为_____________。 ②Br2的KOH溶液将COS氧化为硫酸盐和碳酸盐的离子方程式为_____________。 ③已知断裂1mol化学键所需的能量如下(能量的单位为kJ): H—H C═O C═S H—S C≡O 436745********** H2还原COS发生的反应为H2(g)+COS(g)═H2S(g)+CO(g),该反应的 △H=________kJ·mol-1。 ④用活性α—Al2O3催化COS水解的反应为COS(g)+ H2 O(g)垐? 噲?CO2(g)+ H2S (g)△H<0,相同投料比、相同流量且在催化剂表面停留相同时间时,不同温度下COS的 转化率(未达到平衡)如图1所示;某温度下,COS的平衡转化率与 () 2 n H O n(COS) 的关系如图 2所示。 由图1可知,催化剂活性最大时对应的温度约为________;由图2可知,P点时平衡常数K=_____(保留2位有效数字)。 【答案】Fe2+(或FeCl2) COS + 4Br2 + 12OH- = CO32- + SO42- + 8Br- + 6H2O +8 150℃ 0.048 【解析】

相关文档
最新文档