新华中学修建了两幢教学楼,第一幢有24间教室,第二幢有16间教室.如果每间教室需要安装14盏日光灯,那么这两幢教学楼共需

（1）设行程为x千米
180+2x=140+2.5x
0.5x=40
x=80
(2)由1得知,100大于80,所以租用甲车合算.

I'm Lihua,a senior middle school student.
I'm glad that i have won the first prize in the Spoken English Contest among Senior Middle Schools in our city.
In order to learn it well, apart from English class, I took an active part in English corner and other after-class English activities, which benefit me a lot.
I often take part in the English Corner and practice speaking English. There are many participants in the corner and we can talk about any topics in English. By doing this, I have improved my pronunciation and intonation. Most important of all, I have conquered my shyness and timidness. I can talk to anybody boldly in English. So I didn't feel nervous in the contest at all.
At the same time I insist on watching English News on China Daily and CCTV-9. Learning English depends on reading widely and largely. I benefit much from the reading. Also keeping diaries in English every day is a good habit. I will try my best to bring what I have learnt to use. Thus my knowledge has been reviewed and enlarged.
These're my three main learning methods of learning English after class. They are helpful and convenient to me. I hope they are also beneficial for you.
【英语牛人团】原创奉献,脑力结晶,满意请记得及时采纳哦,谢谢^_^

One possible version:
As a high school student, I consider English a very important subject. In order to learn it well, apart from English class, I took an active part in English corner and other after-class English activities, which benefit me a lot.
In the English corner, I meet many friends, who share the same interest with me. Besides, sometimes, some foreigners are glad to join us. By talking with them, my oral English improved a lot. I also find it useful to keep English diaries. I keep on doing it these years and it is helpful to my English. As a saying goes, practice makes perfect. Only by practice will we make more progress.
Finally, some good English study websites contribute a lot to my improvement. Through these websites, I can read some classic English passages, poems and stories. What’s more, I can learn some learning skills and methodologies, which play an important part in my study process.
All in all, every road leads to Roma, but I believe hard work pays off

……你可以先用中文构思,在英汉互译.就这样,一片完美的英语作文就诞生了,哈哈……
有用的话,记着满意答案.

Dear wangping,
How's everything going with you ? it's 2years since I left for studying abroad in England.
I was told that you would like to further your study in Britain and I'd like to introduce the situation here ,which will be helpful for you .
on the one hand , you must improve language skill ,othrerwise there would be difficulities in communication. on the other hand , you may not be used to the western food at first .However there are chinatowns. certainly you weill be very homesick for a certain while .but take it easy ,I will accompany you on weekends .
expecting to see you soon and i am willing to give you a hand .
best regards .
lihua

解题思路：要安装的机械在旗杆顶端，使用时应该方便、简单、容易操作．

升旗时，人站在地面上，操作机械，旗帜上升．
A、动滑轮不能改变力的方向，要使旗帜上升，拉力也要向上．不符合题意；
B、定滑轮不能省力，但可以改变力的方向，人在下面拉动绳子，旗帜就会上升．符合题意；
C、D、组装及使用都不符合实际，甚至不能改变力的方向．不符合题意．
故选B．

点评：
本题考点： 定滑轮及其工作特点．

考点点评： 此题考查的是利用简单机械解决实际问题，选择具体的机械种类时，既要考虑机械的特点，又要考虑实际情况．

Dear Mr. Smith,
I am writing to give compliment to your good work on our school's English paper, Xinhua Daily. It has been a great reading material for me and it helped a lot with my English reading. My love for this paper is beyond words. Both the teachers and the students around me find it most interesting and instructive. We are grateful for your work and would gladly offer our help should you need it in any way.
By the way, I think it would be a great idea to add a new Class Report column to the paper to include articles about class activities and advanced management experience. Teachers and students will be thrilled to see stories of their own class on the paper and it would encourage students to write, too. Hope you will consider it.
Yours,
Li Hua

Possible version:
Dear Sir,
I am a student from Xinhua Middle School and I am glad to learn that you need a few more part-time English reporters. Interested in the job, I am writing to apply for it because I think I am quite fit for it. As a student, I have not only a wide range of knowledge but also a good command of English. Besides, I am so good at w riting that I have ever had such a similar experience as working as a reporter for my school broadcasting station. Also I am easy-going, skilled at communicating and always willing to work with others cooperatively. I am looking forward to your timely reply and hope that I will be lucky enough to take the job.
　　　　　　　　　　　 Yours sincerely,
Li Hua

略

I'm wangNan,a student of No.1 Middle School. I have a gooa friend,Jim.He' an USA girl.We are both in Class Two,Grade Eight.She is 15 years old,one year older than me. We both study hard.I'm good at physices,but she's good at math.We often help each other with lessons.Both of us like helping others. We both like sports very much.Jim enjoy playing basketball.but Ilike palying soccer. She likes green but Ilike red. Tough we are different in my ways,we are good friends

My experience of learning English after class
I'm glad i have won the first prize in the English Contest, which completely contributes to my after-class English learning.
I often take part in the English Corner and practice speaking English. There are many participants in the corner and we can talk about any topics in English. By doing this, I have improved my pronunciation and intonation. Most important of all, I have conquered my shyness and timidness. I can talk to anybody boldly in English. So I didn't feel nervous in the contest at all.
At the same time I insist on keeping diaries in English every day. I will try my best to bring what I have learnt to use. Thus my knowledge has been reviewed and enlarged.
I also visit English reading websites to read much. Learning English depends on reading widely and largely. Those sites provide many English articles of all levels and I can find appropriate ones to read. The dictionary in the computer can help me deal with the new vocabulary quickly. Therefore I benefit much from the reading.
Above are my three main learning methods of learning English after class. They are helpful and convenient to me. I hope they are also beneficial for you.

xx老师：
对不起,我不该在你的课上玩手机,是我不对,我玩手机是想查资料,惹您生气了,我以后不会这样了.
李华
xx年xx月xx日XX teacher:
Sorry, I don't play mobile phone in your class, I was wrong, I play a mobile phone to check the information, making you angry, I won't be like this.
LiHua
XX yearsXXmonthsXXdays

Suppose you are Lihua studying in Xinhua middle school and alone had a three day travel in Qingdao during your summer holiday.

US语速读完经济危机忘记撒哇几撒几

One possible version：
Dear Tom,
I’m very glad to hear that you are coming to our school to learn Chinese for a year. Here I’ll introduce our school first.
Our school has a history of more than one hundred years and consists of 48 classes. Over 300 teachers are working here. It is located at the foot of a hill and a small river goes through our schoolyard. I believe you’ll enjoy your life here.
However, you’ll face some difficulties if you study in our school. Firstly, you may have difficulty in your study because we speak Chinese all day long. Secondly, you’ll suffer from homesickness because of living far away from your country.
I think you’d better read some books in Chinese to overcome the trouble in understanding the language before you come here.
Yours sincerely,
Li Hua


这篇作文也是要点作文，要点有介绍你们学校，包括它的历史；多少教学班，教职工的数量；地理位置。还要告诉他将面临的困难或问题：有语言障碍还有思乡。这些都应在文章中有所交代，不能缺少。另外题目还要求给出自己的建议，要求根据自己的理解给出切实可行的意见并说明理由，要让人信服。写作时别忘了用一些复合句给文章增添色彩。如范文中的：you’ll face some difficulties if you study in our school. 这是条件句。you may have difficulty in your study because we speak Chinese all day long.这是原因状语从句。

Dear Tom,
Thanks for your concern.I am so sad that I was knocked out in the preliminary, because I just paid a little attention to the competition and not prepared more.On the other hand, I felt very nerious when the competition began. For these reason, I know I should pay more attention all competitions and should prepare before take part in them, and I should control my feelings. I think I can success next time,
yours,
Li Hua

Dear Sir/Madam,
I'm Li Hua from Xinhua Middle School.I want to apply for the position of journalist.
I feel very interested in English and I also hope to make use of this opportunity to improve my English.Besides,I have a wide range of knowledge and a good knowledge of Engish.Above all,I think I can cooperate with others in harmony.
Look forward to your reply!
Yours sincerely,
Li Hua

One Possible version:
Dear Jack,
My family and I feel excited at the news that you are going to stay with us for one month. I’m Li Hua, a junior in Xinhua Middle School. I have a great many interests in which traveling and watching movies are my favorites. As a super sports fan, I regularly play all sorts of ball games as well. Both of my parents are professors in a local college and my father is fluent in English. Almost all my friends who know my parents say they are warm-hearted and easy-going. I really hope you will get along well with them and enjoy your stay with us. By the way ,the weather in Chongqing is unpredictable in early spring, so you probably should take a sweater in case it gets cold sometimes. We are liking forward to your coming and having great fun with you.
Yours,
Li Hua

略

Beautify Our School and Creat Good Studying EnvironmentAs middle school students, we should obey the rules and regulations of our school consicously. Moreover, good interpersonal relations should be ...

Dear Tom,
I’m glad to receive your email, and I am sorry I couldn’t reply in time since I have been preparing for the final exam recently. In your email, you asked me about my plan of the summer holidays. If it comes to a choice, I prefer to go travelling.
First, I would spend a couple of days in Japan not only to enjoy the delicious food, but to learn about people from a different cultural background. Second, walking through a well-known national park is another must on my list, where I can appreciate the creations of nature and relax myself. Finally, I would visit some museums which should not be missed to broaden my horizon as well as enriching my knowledge.
All in all, travelling is the best choice to recharge ourselves and get ready for the new challenges. Let’s just pack our suitcases and start our trip!
Best wishes.
Yours,
Li Hua

Tom,
I am indeed very sorry that I can't go to Beijing with you next weekend,which I have promised.I
feel sorry for it and want you to know what happened.
Just now,my cousin,Li Qing,who left home to Australia for his further study last year,informed
me that he would return this Saturday morning and asked me to pick him up at the airport with his family.You know,we haven't seen each other for nearly a year.
I sincerely hope you can accept my appreciate your allowing me to make another date to show you
around Beijing.Once again,I'm sorry for any inconvenience caused.
All the best
Li Hua
答案不唯一

One possible version：
High school is regarded as the best time in a person’life. As a senior 3 student, it won’t take long before I graduate. Now, I have much to share with my fellow students.
Firstly, I would like to show my appreciation to those standing by me all the way, teachers, parents and friends included. Without their help and advice, my life would be different.
Secondly, I’ve made up my mind to make every effort to study at college,for I believe hard work is the key to success. Meanwhile,physical exercise and recreational activities are also dispensable. Life without sunshine and laughter is bound to be a failure.
Finally I hope that all the younger fellows always keep your dream in mind, by which you will be highly motivated all the time, without doubt or hesitation. Even if sometimes you slack off, tell yourself that tomorrow holds the miracle. Just one more day may be all it will take to realize your dream.

My school is far away from the centre of city and ia at the foot of the hill.There are more than fifty years of history in this school.There are three grades, each grade has twenty classes.What's more,there are three teaching buildings, a laboratory building and an office building.The first day to go to school,I feel very
nervous.But then,I also made some new friends and they are very friendly.

I spare time activities is very rich, I will exercise the body, such as running, swimming, I also will use their spare time reading books, watching English movies, and so on, sometimes I would go to do volunteer, to help the community family difficult students with homework.I think life is very rich我课余时间的活动很丰富，我会锻炼身体，比如跑步、游泳，我还会利用课余时间读书、看英语电影等等，有时候我还会去做做义工，帮助社区内家庭比较困难的学生补习功课。我觉得生活很丰富

Are you ok? I'm li hua. My father mother promised me in my recountal taking me to Britain as after about 10 days travel. I'd love to see you. But I don't know what should be paid attention to in that I want to ask. 1 I don't over tour accommodations. 2 give me confidently about the traffic. There is how I arrange my time to what sites play. Finally invite you to visit China.

Dear Mr Smith,
I am pleased to know that you are currently visiting China and doing voluntary English teaching work at western Sichuan with your daughter who just graduated from university. Hardly could I believe it when I heard the news. You should have let me know before you come. As you know it have been seven years since I graduate from your school and came back to China. Time does fly indeed. I have missed you and other friends in your school very much. Now since you are in China, it is a fantastic cance for us to meet again. Could you spare one or two days to come to our school, Xinhua High School, in which I am working as the headteacher. When you come I would like to ask you and your daughter to give us a talk and our students and staffs may have some questions about American schools to ask you, so we can have a discussion afterward. If time is permitted I would like to guide you for a tour in our city. I would also like to invite you and your daughter to have dinner with my family in my house. Can we preliminarily set it on 8 or 9 of October?
I am looking forward to your reply and meeting you soon.
with best regards!
Wencai Liu

Dear Sir / Madam,
I am a second year student in Xinhua senior middleschool.I had a part-time job what is a typist at school in my spare time.I can type 120 words every minutes.In addition,I am good at English and have the knowledge of the advertising.I am really eager to get the job,because I want to improve my ability.
It wonld be much appreciated if you can give me the chance to challenge myself .I am looking forward to your early reply .
Thank you !
Yours
Lihua

Dear Mr.Wang:
I am writing to apply the position you offered. I can say I read your 21st century everyday, so I will never miss the advertisement pulished in the newspaper.

Ok, my n...

Dear Jackson:First of all,I am sorry for what did in English claas.Actually, I am not on purpose.I use the mobile phone beacause my home has something in trouble and I am worried about it.I would be appriate it if you could help me.

You won’t spend all your time in the classroom. Developing interests, friendships and a social life is also very important so we offer lots of activities in Senior School for you to pursue1. Students can choose to perform in rock bands, go rock climbing, and win prizes for public speaking and dramatic performances.
We encourage everyone to take part in charitable2 activities to help both the local and wider communities. Some of our students are involved in the Duke of Edinburgh Award Scheme, which offers them opportunities to help other people and also gives them a chance to go on expeditions. Travel is an important part of education in Senior School. We also send students overseas to help out in an orphanage3 established by a teacher of our school.
We provide the widest possible physical education program; we believe that every child is good at something and, with encouragement, can develop a lifelong love of exercise and sports. Consequently, alongside traditional team sports such as football and basketball, we offer more diverse4 activities such as dance and gymnastics. Our well-equipped campus has playing fields, tennis courts and heated indoor pools. Our school’s football ability is recognized throughout the North of England.
Performance arts are particularly strong in our school. Our drama centre and theatre has been a venue for many wonderful school performances. Music is also very popular in the school. The Music Department also has a lot of practice rooms, which are used by a variety of performers. We believe in you and your abilities and want to offer a broad and balanced education that will help you to make the most of your future.

Dear pf. Smith,
This letter is written by Li Hua, the president of the student union of Xinhua Mid-school. Our school is wants to coorporate with Chuanxi School for exchange, as a result we want to let the students undersdand more about the life of students in Chuanxi. We heard the news that your daughter has been volunteered in Chuanxi to teach the students English. On behalf of our school, I expect that your dear daughter could take one day to come and give us a speeck about there.
Hereby certify!
Sincerely yours
Li Hua

One possible version:
Dear Tom,
I was far too happy that we made an appointment to visit Beijing together next weekend. How I appreciate the opportunity to be your guide in Beijing! But I’m afraid we’ll have to make it another time, because I’ll be meeting my uncle at the airport. He is on business from Australia, and will be home for only two days. It’s a rare chance for our family to get reunited since he left home ten years ago. I hope you’ll forgive me for not keeping my word. If it’s convenient for you, we can make it the weekend after next, or you may make the choice, OK?
By the way, my family and I will be overjoyed to have your company when my uncle is home. If you have no plan, please let me know, and I’ll fetch you upon my uncle’s return.
Have a happy weekend.
Li Hua

略

Deer Tom
Hi
I'm Li Hua.Sorry.I have something worried.So I can't go to Beijing with you.I hope you can to forgive me.
By:Li Hua
Best wish

Are you ok?I'm li hua.My father mother promised me in my recountal taking me to Britain as after about 10 days travel.I'd love to see you.But I don't know what should be paid attention to in that I want to ask.1 I don't over tour accommodations.2 give me confidently about the traffic.There is how I arrange my time to what sites play.Finally invite you to visit China.

解题思路：（1）此题采用树状图法或者采用列表法都比较简单，解题时要注意是放回实验还是不放回实验，此题属于放回实验；
（2）由图或表知A型号计算器被选中的方案种数，它与总数的比值即为所求．

（1）树状图表示如下：

列表表示如下：

有6种可能结果：（A，D），（A，E），（B，D），（B，E），（C，D），（C，E）；
（2）因为选中A型号计算器有2种方案，即（A，D），（A，E），所以A型号计算器被选中的概率是[2/6＝
1
3]．

点评：
本题考点： 等可能事件的概率．

考点点评： 此题考查的是用列表法或树状图法求概率．列表法可以不重复不遗漏的列出所有可能的结果，适合于两步完成的事件；树状图法适合两步或两步以上完成的事件；解题时要注意此题是放回实验还是不放回实验．用到的知识点为：概率=所求情况数与总情况数之比．

I am a Xinhua Middle School, glad to hear that you have to recruit several part-time English journalist, I am very interested in this job, I feel I am suitable for the job, so writing this letter to apply.

Dear Headmaster,
I am more than excited to hear that the Asian winter Games will be held in our city. And I strongly hope to be accepted as a volunteer for the games.
I am a student of Senior Three. I am fond of sports, and most of my spare time is spent on the playground with my friends. Of all my subjects at school, English is y favourite one , so I’m sure I can be of some help to foreign players during the games. And I can communicate with them after the game, for example , introducing our city to them. I’m outgoing and I am always ready to help others.
Hope the games to be a great success.
Hope I will be chosen to be one of the volunteers.
Yours
Li Hua

{100%原创,望采纳}
Dear David,
I'm very glad to receive your letter and learn that next Sunday is your 16th birthday.
Happy birthday! While growing up, we must be strong and learn to deal with things by ourselves.
Then,it's very kind of you that you spend 2 years in helping me to learn English.I really learn a lot from you. For example , i very much get the hang of the skills on grammar and the spelling of words.It's you that help me believe in myself!
At last,I am willing to be your guide if you can come to China one day,and you can come to our school xinhua middle school.I will show you around the capus.
Always looking forward to hearing from you ~
your sincerely,
liming

你好,写得相当不错,我只是稍加修改了一下,括号内的是修改的或增加的内容.祝你成功,加油!

How to Learn English Well
Hello I am Li Hua and your schoolmate. I‘m very happy to share my experience(s 用复数,同后面的I hope they are...相对应) of learning English here .I hope they are useful to you.
Learning a language ,a good environment is important . For the reason ,joining in a(用an,Ehglish是元音开头的）English corner is a goog way to improve spoken English and listening English.Besides this ,keeping on writing English diaries（改为writing diary in English) is a good idea. If you like suring(surfing 单词拼错了）on the Internet ,Enjoy Reading ,a website which is about English reading is a good place to improve reading . Of course , listening English songs ,writing English articles,listening to English radios are good ways to learn English as well.
In short ,you can always find a way which suits yourself.But I must tell you,the most （important) point is persistence .As Mr Li Yang said :"Nothing can take the place of pesistence in the world !" It's true .Without persistence ,you can do nothing.So ,just try ! (You will benefit from it.)

C

当我们忙碌着用贺卡传递问候与祝福的时候,是否想到过小小一张贺卡对环境造成的危害,让我们用同样的真诚,不一样的载体,遥寄祝福,少用一张贺卡,保护一片森林,多一份环保之心,保护我们赖以生存的家园
字数限制

Dear sir,
I'm writing to request a valuable chance to be one of the host families of the British students.
We have a large and clean house,which lies in a beautiful area of the city.I'm good at English and my
parents are both professors of English,so I'm sure we won't have any difficulty communicating with
English speakers.My father is an excellent driver and we will be very glad to show foreign students
around some nearby places of interest in our own car.Last month we received two American students.
We had a great time.Besides,my mother cooks well,so the students will be able to enjoy delicious
Chinese food.I would greatly appreciate it if I could have the chance to make friends with them.
Looking forward to your reply.
Yours sincerely,
Li Hua

My name is(xxx).I'm a 18-year-old girl,who studying in the XinHua Middle school.What you can see at school are many beautiful flowers, grass and trees. There are three teaching buildings in our school...

Tom,
I am indeed very sorry that I can't go to Beijing with you next weekend,which I have promised.I
feel sorry for it and want you to know what happened.
Just now,my cousin,Li Qing,who left home to Australia for his further study last year,informed
me that he would return this Saturday morning and asked me to pick him up at the airport with his family.You know,we haven't seen each other for nearly a year.
I sincerely hope you can accept my appreciate your allowing me to make another date to show you
around Beijing.Once again,I'm sorry for any inconvenience caused.
All the best
Li Hua
答案不唯一

Dear Smith,

Thanks for the opportunity we can talk about our English class through this method.
We appreciate your effort to make our class so wonderful and everybody enjoy it,and just with your help,95% of us pass the CET-6 successfully,the excellent performance owe to you.
What impress us most is your responsibility to draw everybody's interests ,make us love this language.Actually you are a very excellent teacher,if we have to give some comments for the class,we suggest you give us more guides when we work in a foreign company,how to communicate with foreign boss and how to join in a foreign entironment.this is very necessary 'cause we will graduate in the next half year.

Looking forward to your good news.

Love you .

Hua li. 全手写,用心编辑,望采纳.

Dear Tom
Thank you for your care about 。i took part in the English speech contest ,i thank it was a very good chance to exercise yourself,but i was very tense in the contest .i was eliminate .but ...

Dear Editor,
Eevry summer vacation witnesses a series of camps organized by different institutions.There are all kinds of summer camps. Some are charactered in English . Some are charactered as a losing weight center. In a word, all the camps have their own characteristics. And most parents are very active and they have positive attitude towards the camps. There are many reasons. First some parents think it is the best chance for their children to make a change. During the camp they can learn a lot and make more friends. Others think their children are the only one in their family and don't have chance to play together with others. So it is the opportunity for them to work with others and get some experiences.
In my opinion, it is a good chance if the children would like to take part. So parents should consider their child's demand .

6+2.5x小于20
9+3x大于20
x大于5.6
x小于3.6666666666
取中间的.