当前位置:文档之家› 必修一unit2 语法改错课本练习

必修一unit2 语法改错课本练习

必修一unit2 语法改错课本练习
必修一unit2 语法改错课本练习

语法填空1

So why has English changed over time? 1 (actual)all languages change and develop when cultures meet and communicate with each other. At first the English 2____ (speak) in England between about AD 450 and 1150 was very different from the English spoken today. It 3 (base)more on German than the English we speak at present. Then gradually between about AD 800 and 1150, English became 4 (little)like German because those 5 ruled England spoke first Danish and later French. These new settlers enriched the English language and especially its vocabulary. So by the 1600’s Shakespeare was able to make use 6 a wider vocabulary 7 ever before. In 1620 some British settlers moved to America. Later in the 18th century some British people were taken to Australia too. English began to be spoken in 8 countries.

Finally by the 19th century the language was settled. At that time two big changes in English spelling happened: first Samuel Johnson wrote his dictionary and later Noah Webster wrote The American Dictionary of the English Language. The9 (late) gave a separate identity to American English 10 .

语法填空2

At the end of the 16th century, about five to seven million people spoke English. Nearly all of them lived in England. 1 (late)in the next century, people from England made voyages to conquer other parts of the world and because 2 that, English began 3 (speak) in many other countries. Today, more people speak English as their first, second 4____ foreign language than ever before.

English now is also spoken as a foreign or second language in South Asia. For example, India has 5 very large number of fluent English speakers because Britain ruled India from 1765 to 1947. During that time English 6 (become)the language for 7____ (govern) and education. English is also spoken in Singapore and Malaysia and countries in Africa such as South Africa. Today the number of people 8 (learn)English in China is increasing 9 (rapid). In fact, China may have the largest number of English learners. Will Chinese English develop 10 (it) own identity? Only time will tell.

语法填空3

STANDARD ENGLISH AND DIALECTS

What is standard English? Is it spoken in Britain, the US, Canada, Australia, India and New Zealand? Believe 1 or not, there is no such thing as standard English. Many people believe the English 2 (speak) on TV and the radio is standard English. This is because in the early days of radio, those who reported the news 3 (expect) to speak excellent English. 4 , on TV and the radio you will hear differences in the way people speak.

When people use words and 5 (express)different form “standard language”, it is called a dialect. American English has many dialects, especially the midwestern, southern, African American and Spanish dialects. Even in some parts of the USA, two people from neighbouring towns speak a little 6 (different). American English has so many dialects because people have come from all over the world.

Geography also plays a part 7 making dialects. Some people who live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they 8 (take)their dialects with them. So people

from the mountains in the southeastern USA speak with almost 9 same dialect as people in the northwestern USA. The USA is a large country in 10 many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects.

短文改错1

At the end of the 16th century, about five to seven million people speak English. Nearly all of us lived in England. Late in the next century, people from England were made voyages to conquer others parts of the world. Because that, English began to be spoken in many other country. Today, more people speak English as their first, second and foreign language than ever before.

Native English speakers can understand each other even if they don’t speak same kind of English.

British Betty: Would you like to see my flat?

American Amy: Yes. I’d like to come up with your apartment.

短文改错2

So why has English changed over time? Actually all languages changed and develop when cultures meet and communicate with each other. At first the English spoken in England between about AD 450 and 1150 was very much different from the English spoken today. It was based more on German than the English we speak at the present. Then gradual between about AD 800 and 1150, English became less like German because those that ruled England spoke first Danish and later French. These new settlers enriched the English language and especially their vocabulary. So by the 1600’s Shakespeare was able to make use a wider vocabulary than ever befor e. In 1620 some British settler moved to America. Later in the 18th century some British people was taken to Australia too. English began to be spoken in all countries.

短文改错3

English now is also spoken a foreign or second language in South Asia. For example, India has a very larger number of fluent English speakers because Britain rule India from 1765 to 1947. During that time English became the language for government or education. English is also spoken in Singapore and Malaysia and country in Africa such as South Africa. Today the number of people learn English in China is increasing rapid. In the fact, China may has the largest number of English learners. Will Chinese English develop their own identity? Only time will tell.

新人教版 高一英语必修一unit2同步练习及答案

一.单项填空 ( )1.—Sorry,sir.I didn’t quite follow you.—________.I’ll explain it to you later. A.Don’t worry B.Come on C.That’s right D.Don’t mention it ( )2.—We are going there by________sea. —Don’t you think it too slow?Why not take________train? A.the;/ B.the;the C./;/ D./;the ( )3.Ten minutes later,a bus________and everybody got on it. A.came up B.added up C.looked up D.put up ( )4.As you can see,the number of cars on our roads________rising these days. A.was keeping B.keep C.keeps D.were keeping ( )5.Every minute must be made full use of________spoken English. A.to practise B.practising C.practise D.practised ( )6.She understood what I was talking about,________it was the first time we had spoken together. A.whether B.even though C.as though D.since ( )7.My uncle knows several foreign languages,________English,French and Japanese. A.for example B.for instance C.such as D.that is ( )8.As the project________at the meeting,it drew our attention. A.comes up B.was coming up C.came up D.had come up ( )9.—What do you think______an important part in their lives?—Friends. A.plays B.takesw C.makes D.acts ( )10.This tree,among the tallest in the world,is________to a small area in southeastern Africa. A.present B.native C.official D.latter 第二节完形填空(共20小题;每小题1.5分,满分30分) A large cat arrived at a farm where many mice lived.None of them dared go outside for fear of being __1__by the cat. The mice decided to hold a __2__ to find a way of stopping themselves from being in__3__.One day,when the cat was out,mice of all ages__4__into the meeting room. “Let’s build a big trap,”one mouse__5__.When this idea was__6__,another said,“What about poisoning(毒死)her?”But __7__knew where to buy the poison.One young mouse,whose mother had become t he cat’s food,__8__said,“Let’s cut her teeth,so she can do no more harm.”But the meeting did not accept his__9__. At last,one mouse,__10__than the rest,jumped onto a table.Waving a bell,he called for__11__,“Be quiet!We’ll tie this bell to the cat’s tail,so we’ll always know__12__ she is!We’ll have__13__ to escape,and the slower and weaker mice will hear her coming and be able to__14__!”Hearing the words,everyone got__15__ and they congratulated him on his good idea. “We’ll tie it so tightly(紧紧地)that it will never__16__!” “She’ll never be able to walk__17__ again!Why,the other day,she suddenly appeared right in front of me!Just imagine...” However,the wise mouse said,“We must__18__who is going to tie it on her tail.”There was not a sound in the room.Nobody was__19__ enough to put the plan into action.The meeting ended without any decision being made. It’s often very__20__to have bright ideas,but putting them into practice is a more difficult matter. ( )1.A.trained B.taught C.caught D.invited。

新人教版高一英语必修一unit同步练习及答案

一.单项填空 ( )1.—Sorry,didn’t quite follow you.—’ll explain it to you later. A.Don’t worry B.Come on C.That’s right D.Don’t mention it ( )2.—We are going there by________sea. —Don’t you think it too slow?Why not take________train A.the;/ B.the;the C./;/ D./;the ( )3.Ten minutes later,a bus________and everybody got on it. A.came up B.added up C.looked up D.put up ( )4.As you can see,the number of cars on our roads________rising these days. A.was keeping B.keep C.keeps D.were keeping ( )5.Every minute must be made full use of________spoken English. A.to practise B.practising C.practise D.practised ( )6.She understood what I was talking about,________it was the first time we had spoken together. A.whether B.even though C.as though D.since ( )7.My uncle knows several foreign languages,________English,French and Japanese. A.for example B.for instance C.such as D.that is ( )8.As the project________at the meeting,it drew our attention. A.comes up B.was coming up C.came up D.had come up ( )9.—What do you think______an important part in their lives—Friends. A.plays B.takesw C.makes D.acts ( )10.This tree,among the tallest in the world,is________to a small area in southeastern Africa. A.present B.native C.official D.latter 第二节完形填空(共20小题;每小题分,满分30分) A large cat arrived at a farm where many mice of them dared go outside for fear of being __1__by the cat. The mice decided to hold a __2__ to find a way of stopping themselves from being day,when the cat was out,mice of all ages__4__into the meeting room. “Let’s build a big trap,”one this idea was__6__,another said,“What about poisoning(毒死)her?”But __7__knew where to buy the young mouse,whose mother had become the cat’s food,__8__said,“Let’s cut her teeth,so she can do no more harm.”But the meeting did not accept his__9__. At last,one mouse,__10__than the rest,jumped onto a a bell,he called for__11__,“Be quiet!We’ll tie this bell to the cat’s tail,so we’ll always know__12__ she is!We’ll have__13__ to escape,and the slower and weaker mice will hear her coming and be able to__14__!”Hearing the words,everyone got__15__ and they congratulated him on his good idea. “We’ll tie it so tightly(紧紧地)that it will never__16__!” “She’ll never be able to walk__17__ again!Why,the other day,she suddenly appeared right in front of me!Just imagine...” However,the wise mouse said,“We must__18__who is going to tie it on her tail.”There was not a sound in the was__19__ enough to put the plan into meeting ended without any decision being made. It’s often very__20__to have bright ideas,but putting them into practice is a more difficult matter. ( )1.B.taught C.caught D.invited。 ( )2.B.test C.game D.meeting ( )3.B.danger C.fact D.need ( )4.B.swam C.flew D.stepped ( )5.B.explained C.suggested D.answered

必修二unit2语法讲解将来时被动语态(可编辑修改word版)

必修二,unit2 语法讲解一般将来时的被动语态[学习中的语法] ①Only athletes who have reached the agreed standard for their event will be admitted as competitors. ②And after that the 2012 Olympics will be held in London. ③A new village for the athletes and all the stadiums will be built to the east of London. ④I shall be invited to speak at the opening ceremony. ⑤We shan’t be asked to be there before eight. ⑥They won’t be stopped outside the stadium.They have tickets. ⑦Shall I be admitted into the stadium? ⑧Will he be cheered up by the watchers when competing in the race? [我的发现] (1)上述例句中加黑部分的时态为的被动语态;其谓语动词的构成为:。(2) 例句①~④为一般将来时被动语态的肯定句,其结构为:主语++其他。 (3)例句⑤和例句⑥为一般将来时被动语态的否定句,其结构为:主语++过去分词+其他。 (4)例句⑦和例句⑧为一般将来时被动语态的一般疑问句,其结构为+过去分词+其他? 一、定义 一般将来时的被动语态表示主语为动作的承受者,且动作发生在将来某一时刻或阶段。 二、一般将来时的被动语态的构成 其基本构成为:“shall/will+be+过去分词”,其中shall 常用于第一人称,will 用于各种人称。 The building will be built next month. 这栋楼将下个月开工。 The little girl will not be allowed to watch TV if she doesn’t finish her homework. 如果完不成作业,小女孩不能看电视。 1-1.用所给词的适当形式填空 ①A new bridge (build) next year. ②I (give) a bike as my present tomorrow. ③those old buildings (pull) down next week? ④(湖南高考)Don’t worry. The hard work that you do now later in life. A.will be repaid B.was being repaid C.has been repaid D.was repaid 三、一般将来时被动语态的用法 1.表示根据计划或安排将要发生的被动的动作。常与表示将来的时间状语连用,或暗含将来的时间。 These books will be published next week.

高中英语必修一知识讲解-Unit-2语言点

Unit2 English around the world语言点 目标认知 重点词汇 base, command, request, develop, identity, expect, recognize, straight,actually 重点短语 because of, come up, make use of, play a part in, a number of, even if, in the way, more than,at present, such as 重点句型 ¥ believe it or not一族 插入语do you think 知识讲解 重点词汇 base 【原句回放】English was based more on German than the English we speak at present. 当时的英语更多地以德语为基础,而我们今天说的不是。 【点拨】base vt.根据,基于 " n.基础;基地;基数 常见搭配: base A on/upon B 把A 建立在B的基础上 be based on 以……为基础 be based in 驻扎,设立;以……为基地 He based his hope on the good news we had yesterday. 他把希望寄托在我们昨天得到的好消息上。 The film is based on a true story. 这个电影是以一个真实的故事为基础的。 ( They decided to base the new company in York. 他们决定新公司设在纽约。 【拓展】basic adj.基础的,基本的 command 【原句回放】Can you find the following command and request from Reading你能从阅读部分找出下列命令和请求吗 【点拨】command n. & v.命令,指挥;把握,掌握;控制 常用搭配:

高一物理必修一第二章测试题及答案

一、选择题 1.物体做自由落体运动时,某物理量随时间的变化关系如图所示,由图可知,纵轴表示的这个物理量可能是( ) A .位移 B .速度 C .加速度 D .路程 2.物体做匀变速直线运动,初速度为10 m/s ,经过2 s 后,末速度大小仍为10 m/s ,方向与初速度方向相反,则在这2 s 内,物体的加速度和平均速度分别为( ) A .加速度为0;平均速度为10 m/s ,与初速度同向 B .加速度大小为10 m/s 2,与初速度同向;平均速度为0 C .加速度大小为10 m/s 2,与初速度反向;平均速度为0 D .加速度大小为10 m/s 2,平均速度为10 m/s ,二者都与初速度反向 3.物体做匀加速直线运动,其加速度的大小为2 m/s 2,那么,在任一秒内( ) A .物体的加速度一定等于物体速度的2倍 B .物体的初速度一定比前一秒的末速度大2 m/s C .物体的末速度一定比初速度大2 m/s D .物体的末速度一定比前一秒的初速度大2 m/s 4.以v 0 =12 m/s 的速度匀速行驶的汽车,突然刹车,刹车过程中汽车以a =-6 m/s 2的加速度继续前进,则刹车后( ) A .3 s 内的位移是12 m B .3 s 内的位移是9 m C .1 s 末速度的大小是6 m/s D .3 s 末速度的大小是6 m/s 5.一个物体以v 0 = 16 m/s 的初速度冲上一光滑斜面,加速度的大小为8 m/s 2,冲上最高点之后,又以相同的加速度往回运动。则( ) A .1 s 末的速度大小为8 m/s B .3 s 末的速度为零 C .2 s 内的位移大小是16 m D .3 s 内的位移大小是12 m 6.从地面上竖直向上抛出一物体,物体匀减速上升到最高点后,再以与上升阶段一样的加速度匀加速落回地面。图中可大致表示这一运动过程的速度图象是( ) 7.物体做初速度 为零的匀加速直线运动,第1 s 内的位移大小为5 m ,则该物体( ) A .3 s 内位移大小为45 m B .第3 s 内位移大小为25 m C .1 s 末速度的大小为5 m/s D .3 s 末速度的大小为30 m/s

高一英语必修一Unit2单元测试与答案

人教新课标必修一Unit2 English around the world单元同步测试 I. 单项选择 1. ---Are you sure you have ______ all the documents in your list? ---Oh, sorry, I forgot to ______ the one you had sent me. A. included; contain B. listed; include C. listed; be included D. contained; listed 2. She didn’t come to his birthday party just ______what he had said to her the day before. A. because B. because of C. as result of D. thanks for 3. If you want to do international trade successfully, ______ of English is _______. A. good command; a must B. a good command; a need C. a good command; a must D. good command; must 4. Pandas are native ______ China. A. with B. to C. for D. in 5. If you can’t _____ a better plan, we have to carry ou t the present one. A. come along with B. come up with C. come across D. come about for 6. She pretended to be calm but _______she was more than nervous at the time she was being questioned. A. in actual B. actually C. as matter of fact D. in a fact 7. Everybody has ______ to play _____ our environment. A. a part; to protect B. a role; in protecting C. part; in protecting D. a role; to protect 8. When the expression first came into being, people refused to use it but _____ they began to accept it. A. usually B. gradually C. frequently D. quickly 9. You won’t be able to make a wise _____ of a word until you know all the _____ of it. A. use; uses B. usage; usages C. use; usages D. usage; uses 10.My elder sister is _______ studying in Britain and she can speak English quite fluently like a native speaker. A. in the present B. at present C. at the present D. for the present 11. Some minority(少数民族) languages are losing their ______ because of the invasion(入侵) of more popular spoken ones. A. ideas B. natures C. identities D. characters 12. Some animals ______ the tiger, the lion and the wolf are meat-eaters.

人教版高中英语必修二第2讲:Unit1 Cultural relics-语法篇(学生版)

Unit1 Cultural relics-语法篇 __________________________________________________________________________________ __________________________________________________________________________________ 通过本节课的学习掌握限制性定语从句与非限制性定语从句的用法与区别。 一.限制性定语从句和非限制性定语从句 定语从句可分为限制性定语从句和非限制性定语从句 什么是限制性定语从句? ?Anyone should be punished. Anyone who breaks the rules should be punished. 也就是说,如果一个句子去掉定语从句后,主句的意思不是所要表明的意思,那么这个定语从句就是限制性定语从句。 什么是非限制性定语从句? 就是不用限制先行词的定语从句。译成汉语时,主句和从句可以分别翻译,互不影响。最大的特点就是先行词后面有逗隔开。 ?She is good at spe aking French, which she lea rned at school. ?This book was written by Jack, who was here a moment ago. ?I have some friends, some of whom are teachers. 限制性定语从句的连接词可以用who, whom或whose, which。不用that,也不能省略。 ?She had eight children, three of whom became sold iers. ?Their teacher is a Japanese, whose wife is a Chinese. ?My sister, who is a nurse, got married last month. ?China has hundreds of islands, the largest of which is Taiwan. 非限制性定语从句还可以用when或where引导。 ?She is going to Shanghai, where she was born.

人教版高一英语必修一Unit2知识梳理、重点词汇解析及单元自测[1]1

人教版高一英语必修一Unit2知识梳 理、重点词汇解析及单元自测课文回忆 2.说明文阅读技巧:找全文或每段的the main point(中心话题) Paragraph1: The spread of English language in the world Paragraph2:Native speaker can understand each other but they may not be able to understand everything Paragraph3:All languages change when cultures communicate with one another Paragraph4:English is spoken as a foreign language or second language in Africa and Asia 3.短语归纳 1. 不只有一种英语more than one kind of English 2. 在一些重要方面in some important ways 3. 彼此不同be different from one another 4. 与现代英语不同be different from modern / present day English 5. 世界英语world Englishes 6. 起着的重要作用play an important role / part 7. 起着越来越重要的作用play a more and more /an increasingly important part / role 8. 因为它特殊的作用because of its special role 9. 国际语言an international language 10. 在16世纪末at the end of the 16th century 11. 在17世纪初at the beginning of the 17th century 12. 在20世纪前期in the early 20 th century 13. 比以往任何时候都than ever before 14. 即使even if / even though 15. 以德语为基础be based on German 16. 使用更大的词汇量make use of a wider vocabulary 17. 它自己的特色its own identity 18. 众多讲英语的人 a very large number of English speakers 19. 学英语的人数the number of people learning English 20. 迅速增长 increase rapidly 21. 标准英语 standard English 22. 信不信由你believe it or not 23. 讲最好的英语speak excellent English 24. 相邻的城镇neighboring towns 25. 从一个地方搬到另一个地方move from one place to another 26. 充分利用不同的方言make full use of different dialects 27. 目前的形势present situation 28. 国际组织an international organization 29. 词汇与惯用法vocabulary and usage 30. 辨认出他的口音recognize his accent 31. 中西部地区的方言midwestern dialect(s)

人教高中英语必修一Unit 2 同步练习及单元测试题(有答案)

Part 1 Warming Up, Pre?reading, Reading and Comprehending I. 根据下面各句句意以及所给单词的首字母或汉语提示词,写出该单词的正确形式(每空一词)。(每小题1分,共10分) 1. The horse is not n________ to America — it was introduced by the Spanish. 2. The country has been ruled by the Spanish for years and Spanish has become its o________ language. 3. Given a choice between Tahiti and Hawaii, I’d prefer the l________ for my holiday. 4. The Titanic sank in April 1912 on its first v________ from Southampton to New York. 5. True friendship should be b________ on e ach other’s understanding. 6. Reading is one of the best ways of improving your v________. 7. The police are trying to discover the ________ (身份) of the killer. 8. I’m looking for a(n) ________ (公寓) on the east side of the city. 9. Our car ran out of p________ and we had to walk to the nearest garage. 10. If you want to buy skirts, please take the ________ (电梯) to the third floor. II. 用括号内单词的正确形式填空。(每小题1分,共5分) 1. _______ (gradual), the children began to understand French. 2. British and American ________ (spell) are different in many ways. 3. The ten most ________ (frequent) asked questions are listed below. 4. I’d like to speak French ________ (fluent). 5. I grew bored and ________ (actual) fell asleep for a few minutes. III. 用适当的介词填空。(每小题1分,共5分) 1. I’m afraid I can’t help you just ________ present; I’m too busy. 2. The road ________ success is not always an easy one. 3. Parents often find it difficult to communicate ________ their children. 4. I base my hopes ________ the good news we had yesterday. 5. The goods delivered were very different ________ the sample.

高中英语必修一Unit2知识点总结

Unit 2 English around the world 一、单词识记命令 1.________________ n.& vt. 2. ________________ adv. really 请求,要求 3._________________ n.& vt. 承认,辨认出 4._________________ vt. 闪电 5._________________ n. 地的/本国 6._______________ adj. 直的 7._______________ adj. 直接adv. 后者的,较后的 8._______________ adj. 毒气;气体;汽油 9._______________ n. 阻塞vt.街区 10.________________ n. 11. identity n. __________________ 12. eastern adj.__________________ 13. official adj.___________________ 14. voyage n. _____________________ 15. gradual adj. _____________________ 16. vocabulary n. _____________________ 17. elevator n. _____________________ 18. apartment n. _____________________ 19. expression n. _____________________ 20. accent n. _____________________ 二、词汇拓展基地;基部n.为根据……以1. base vt. ;基础的___________adj. 主要地;实际上;基本上___________adv.根本的基准;要

人教版高一英语必修一Unit2单元测试及答案

人教新课标必修一 Unit2 English around the world单元同步测试 I. 单项选择 1. ---Are you sure you have ______ all the documents in your list? ---Oh, sorry, I forgot to ______ the one you had sent me. A. included; contain B. listed; include C. listed; be included D. contained; listed 2. She didn’t come to his birthday party just ______what he had said to her the day before. A. because B. because of C. as result of D. thanks for 3. If you want to do international trade successfully, ______ of English is _______. A. good command; a must B. a good command; a need C. a good command; a must D. good command; must 4. Pandas are native ______ China. A. with B. to C. for D. in 5. If you can’t _____ a better plan, we have to carry ou t the present one. A. come along with B. come up with C. come across D. come about for 6. She pretended to be calm but _______she was more than nervous at the time she was being questioned. A. in actual B. actually C. as matter of fact D. in a fact 7. Everybody has ______ to play _____ our environment. A. a part; to protect B. a role; in protecting C. part; in protecting D. a role; to protect 8. When the expression first came into being, people refused to use it but _____ they began to accept it. A. usually B. gradually C. frequently D. quickly 9. You won’t be able to make a wise _____ of a word until you know all the _____ of it. A. use; uses B. usage; usages C. use; usages D. usage; uses 10.My elder sister is _______ studying in Britain and she can speak English quite fluently like a native speaker. A. in the present B. at present C. at the present D. for the present 11. Some minority(少数民族) languages are losing their ______ because of the invasion(入侵) of more popular spoken ones. A. ideas B. natures C. identities D. characters 12. Some animals ______ the tiger, the lion and the wolf are meat-eaters. A. such like B. such as C. for example D. including 13. Young students are ______ not to smoke both in and out school. A. suggested B. requested C. hoped D. invited 14. No product is allowed to go into the market if it fails to _____ the quality standard.

人教版高一英语必修二Unit3 语法课 课程教学设计

’ Unit3 阅读课 公开课教学设计 Tea ching Design for Grammar of B2U3 浠水一中 周静 The General Idea of This Period This period includes Reading task on P age 58-59.In this period the students will be involved in a speaking activity a bo u t learning and practicing The Present Perfect Passive V oice. T eaching Aims: 1. Knowledge: a. The structure of the Present Perfect Passive V oice. b. The usages of the Present Perfect Passive V oice. 2. Ability: a. Enable students t o use the correct tense in their writing and speaking. c. Enable students t o use right words in the Present Perfect Passive V oice. 3. Feeling and attitude: a. Let students know the importance of English grammar . b. Try t o build up students confidence in themselves. c. Encourage students to speak English in public. T eaching Important Points: 1. Help students understand the usages of the Present Perfect Passive V oice. 2. The differences betw een past simple tense and the Present Perfect Passive V oice. T eaching Difficult Points : How to help students use the Present Perfect Passive V oice correctly and properly . T eaching Methods: 1. T ask -based learning. 2. Cooperative learning. T eaching Aids : 1. A t ape recorder . 2. A multimedia classroom.

相关主题
文本预览
相关文档 最新文档