有一买报人,从报社进某种证劵报是每份1.5元,卖2元,卖不掉的按1元退回报社

media

I want to be a newspaper reporter,because it is an interesting job.

报社
newspaper office

解题思路：利润=每份报纸的利润×份数，但要注意分前20天和后10天的，卖出的和退回的．

设该报亭每天从报社买进报纸x（份），所获月利润为y（元）．（1分）
根据题意，得
y=20×（0.50-0.30）×150+20×（0.10-0.30）（x-150））+10×（0.50-0.30）x．
（150≤x≤200）（4分）
即y=-2x+1200．（150≤x≤200）（5分）
∵-2＜0
∴函数在150≤x≤200时，y随x的增大而减小，（6分）
∴当x=150时，y有最大值
最大值为：-2×150+1200=900（元）．（8分）
答：报亭每天从报社买进150份报纸时，每月获得利润最大，最大利润为900元．（9分）

点评：
本题考点： 一次函数的应用．

考点点评： （1）根据题意准确列出利润表达式．
（2）利用一次函数求最值时，主要应用一次函数的性质；
（3）用一次函数解决实际问题是近年中考中的热点问题．

数学
y=0.5b+0.2*(x-b)-0.4x 化简后y=0.3b-0.2x
英语
1.take care of
翻译
1.一些孩子生病了所以不能去上学.
2.家庭教育听起来很简单,但是它实际很难.
3.I go to swimming 3 or 4 times every week.

（1) 1,x

(1) y＝﹙1－0.6﹚X－(0.6－0.5)﹙100－X﹚
(2) 把y＝0代入得到X＝20,所以卖了20份.

设每天从报社买进的份数为x份,每月利润为y元
y=(1-0.9)×20x+(1-0.9)×10×250-(0.9-0.1)×10(x-250)
=-6x+2250
250≤x≤400
因函数单调递减,所以y随x的增大而减小
当x=250时,函数取得最大值,最大值为：-6×250+2250=750
这个摊主每天从报社买进250份,才能使每月所获利润最大,他一个月最多可赚750元

1.800*3%=24,实际得776元
2.甲的速度为1/9,乙的速度为1/6
甲单独做4/9,共做5/9；
天数=5/9/（1/9+1/6）=2天

解题思路：（1）根据利润=卖出去的钱（收入）-买进报纸的钱（支出），由自变量不同的取值范围就可以列出相应的解析式．
（2）根据（1）求出的解析式，在自变量的取值范围内由一次函数的性质就可以求出其最大值．

（1）由题意得：当0≤x≤60时，y=31x-0.7×31x=9.3x；
当60＜x≤100时，y=20x+11×60+0.2×11（x-60）-31×0.7x=0.5x+528；
③当x＞100时，y=20×100+11×60+0.2[20（x-100）+11（x-60）]-0.7×31x，
y=-15.5x+2128，
当y≥0时，不亏本，
-15.5x+2128≥0
x≤137[9/31]，
∵x为整数，
∴x所能取得的最大值为：137．
（2）由（1）得，
当0≤x≤60时，y=9.3x，y随x的增大而增大，
∴当x=60时，y_最大=558元，
当60＜x≤100时，y=0.5x+528，y随x的增大而增大，
∴当x=100时，y_最大=578元，
当x＞100时，y=-15.5x+2128，y随x的增大而减小，
当x=101时，y_最大=562.5元
∵558＜562.5＜578，
∴李萌同学应该每天订购100份该报纸，获得的利润最大为：578元．
故答案为：y=9.3x，y=0.5x+528，y=-15.5x+2128，558，578，562.5．

点评：
本题考点： 一次函数的应用．

考点点评： 本题考查了运用一次函数解决实际问题，一次函数的图象特征的运用和一次函数的性质的运用，在解答时求分段函数的表达式的最大值，确定自变量的取值范围是关键．

I sent my resume to this newspaper office not long ago.Unexpectedly,I got the offer.

设批进x份,利润为y
y=20*150*1.5+(x-150)*0.4+10*100*1.5+(x-100)*0.4-30x*1
简化得y=5900-29.2x
要使利润最大,则x要最小,但是x最小不得低于150份,所以这个报亭应该每天从报社批进150份,才能使获得的月利润最高,最高利润为y=5900-29.2*150=1520(元).

Our school art festival is held once a year. I think this year’s was excellent because a lot of students and teachers took part in it. At first, the students of Class1 Grade6 danced the Gangnam Style....

One possible version
Dear Editors,
I’m writing to say something about some uncivilized behavior on our campus.
As we all know, the school is where students receive an education. However, what is happening around us is worrying. For instance, some students are often late for school or leave early. In addition we can’t fail to notice that some students often make too much noise or throw rubbish. Instead of showing respect for our teachers, some students often answer them back rudely. If teachers are strict with them, they feel uncomfortable. As a result, they often cheat rather than study hard. Some others may go even further---they tend to smoke, fight with others or make rude remarks about others, destroying the image of our school.
In order to build a harmonious school, we must take measures to get rid of all the bad behavior and develop good habits. Besides we should also try our best to persuade others to be civilized.

略

解题思路：先设摊主每天从报社买进x份，分析题意得，显然当x∈[250，400]时，每月所获利润才能最大，下面列出每月所获利润的函数式，再结合函数的单调性即可计算他一个月最多可赚得多少元．

设摊主每天从报社买进x份，
显然当x∈[250，400]时，每月所获利润才能最大．（2分）
于是每月所获利润y为
y=20•0.30x+10•0.30•250+10•0.05•（x-250）-30•0.20x（6分）
=0.5x+625，x∈[250，400]．（8分）
因函数y在[250，400]上为增函数，
故当x=400时，y有最大值825元．（14分）
答：这个摊主每天从报社买进400份，才能使每月所获的利润最大，并计算他一个月最多可赚得825元．

点评：
本题考点： 函数模型的选择与应用．

考点点评： 函数模型为分段函数，求分段函数的最值，应先求出函数在各部分的最值，然后取各部分的最值的最大值为整个函数的最大值，取各部分的最小者为整个函数的最小值．本小题主要考查函数模型的选择与应用，属于基础题．

Dear editor,
I’m writing to tell you about a food poisoning incident.Several days ago,my neighbor family ate a bag of fake food from the market.After the meal,they had stomachaches and brought up what they had eaten as their faces turned pale.Fortunately,another neighbor passed by only to find the accident and immediately called the ambulance,which carried them quickly to hospital.After several hours’ treatment they finally escaped from death.
From this all of us have realized the importance of food safety.As some illegal business men are only interested in making profits in the race to become rich quickly,they seldom care about the necessary safety measures and hygiene or care what happens to consumers.They must be charged by law.Meanwhile I do hope the whole society shall begin taking actions to protect people’s life safety.
Yours
Li Hua

我是语文高手

Dear editor,
I'm writing to express my worry about the fact that groups of students are addicted to playing video games.
As is known to all, games are often ...

I think staff member should at definitely the of distance brand that places "please don't write indiscriminately disorderly painting".

只要两个吗?
1、报社的记者和编辑一共有3个
2、记者和编辑来自三个不同的报社
改就不好说了……sorry,只能帮到这啦……

Dear,
I'm so sorry to hear that you get not well on your classmates .And it has already puzzled you!
For me,at first ,I think you should change yourself,one person who is very happy and humor,his friends must like him .and second ,you can directly to ask your classmates,it's best way to solve
the problem.Finally,You are so clever ,and you can be a very popular person!
Sincerly
Editor k

Living in a city has both advantages and disadvantages.It is often easier to find work.There are always many choices of public transport.Besides,there are a lot of interesting things to do and places to see.You can eat in good restaurants,visit museums,go to cinemas and go to parks whenever you want to relax.However,living in a city is often very expensive.You must find a well-paid job,otherwise,you will not be able to afford the things you will do.What's more,the city is always crowded,noisy and dirty.It is very difficult to find a good place where people can enjoy peace and fresh air as in the countryside.

To the northwest and north of Beijing, a huge, serrated wall zigzags it's way to the east and west along the undulating mountains. This is the Great Wall, which is said to be visible from the moon.
Construction of the Great Wall started in the 7th century B.C. The vassal states under the Zhou Dynasty in the northern parts of the country each built their own walls for defence purposes. After the state of Qin unified China in 221 B.C., it joined the walls to hold off the invaders from the Xiongnu tribes in the north and extended them to more than 10,000 li or 5,000 kilometers. This is the origin of the name Of the "10,000-li Great Wall".
The Great Wall was renovated from time to time after the Qin Dynasty. A major renovation started with the founding of the Ming Dynasty in 1368, and took 200 years to complete. The wall we see today is almost exactly the result of this effort. With a total length of over 6,000 kilometers, it extends to the jiayu Pass in Gansu Province in the west and to the mouth of the Yalu River in Liaoning Province in the east. What lies north of Beijing is but a small section of it.
A Map of the Great Wall
The map shows the Wall running from Jiayu Pass of Gansu Province to Shanhai Pass of Hebei Province. Representative sections of the Great Wall built in Ming times are situated near Shanhai Pass, Gubeikou and Juyong Pass.
Badaling Section
The Badaling section of the Great Wall snaking along the mountains northwest of Beijing was built at the beginning of the Ming Dynasty in the 14th century. Being 7.8 metres high and 5.8 metres wide at the top on the average, it has battle forts at important points, including the corners.
Located 10 kilometers south of the Badaling section of the Great Wall and built in an 18.5-kilometre-long valley, the pass has always been an important gateway northwest of Beijing. The name is believed to have its origin in the workers and slaves conscripted to build the Great Wall in ancient times. Cloud Terrace, built in 1345, was originally the base of a pagoda over looking the main road of the town of the pass. The arched gate of the terrace and the walls inside the arch are decorated with carvings. of elephants, lions, birds, flowers and heavenly kings as well as charms in six languages-Sanskrit, Tibetan, Phats pa (Mongolian), Uygur, West Xia and Han.
Mutianyu Section
The Mutianyu section of the Great Wall, 70 kilometers northeast of Beijing, is linked to the Gubeikou section on the east and the Badaling section on the west. It is one of the best sections of the Great Wall.
The Mutianyu section of the Great Wall is crenelatted for watching and shooting at the invading enemy. Some of the battle forts on the wall are as close as 50 metres apart.
Jinshanling Section
Located in Miyun County northeast of Beijing, the Jinshanling division of the Great Wall, like the Simatai division, belongs to the Gubeikou section of the colossal defence barrier.
The battlements in the Jinshanling division of the Great Wall are built along the ridge of a mountain, where the soldiers can resist the invading enemy by taking advantage of the high terrain.
A decrepit battle fort at dusk often reminds one of the battles in ancient times.
Simatai Section
Located to the east of Jinshanling, the Simatai division of the Great Wall is 3,000 metres long and has 35 battle forts. The wall rises and falls with the precipitous mountain ridge, while the battle forts are located high up the hills.
Alarm was raised by means of smoke signals, at night by fire. Smoke was produced by burning a mixture of wolf dung, sulfur and saltpeter. Shots were fired at the same time. Thus an alarm could be relayed over 500km within just a few hours.
The Great Wall in Four Seasons

（1）0.0015（2）1.5X－0.5n（3）287.5(元)

(1)由图可得100a＋0.002×100＋0.003×100＋0.003 5×100＝1，解得a＝0.0015.
(2)∵n≥X，∴Y＝(2－1)X－(n－X)0.5＝1.5X－0.5n.
(3)若当天进货量n＝400，依题意销售量X的可能值为200，300，400，500，对应的利润Y分别为100，250，400.
利润Y的分布列为

Y
100
250
400

P
0.20
0.35
0.45
所以E(Y)＝100×0.20＋250×0.35＋400×0.45＝287.5(元)．

（1）y=（1﹣0.5）x﹣（0.5﹣0.2）（200﹣x）
=0.8x﹣60（0≤x≤200）；
（2）根据题意得：30（0.8x﹣60）≥2000，
解得x≥ ．
159份报纸才能保证每月收入不低于2000元．

1.每月订购报纸30x,每份报纸利润0.3元）；
退回报社的报纸（30x-20*100-10*60份）,每份亏损（0.7-0.2=0.5元）；
每月利润y=0.3(20X+60*10)-0.5*10(X-60)=X+480 (60≤x≤100）
2.最大利润y=100+480=580.

范文：
Dear editor,
I’m writing to tell you about the discussion we carried out on whether it is necessary for middle school students to have mobile phones.
The majority of the students think that students should have mobile phones because they think that it is more convenient for them to keep in touch with their parents and classmates if they have mobile phones. Besides, they can send messages and take pictures with mobile phones. And what’s more, it’s a fashion.
However, most teachers don’t think so. They think that middle school students are not old enough to control themselves. With mobile phones, students may play games, send messages or take photos, which is a waste of time and affects their studies. Besides, it is reported that mobile phones can produce radiation, which does harm to their health.
In my opinion, as middle school students, we should not follow the fashion. Instead, we should put all our heart into our studies.
Yours truly,
Li Hua

答题时应该注意将正反两方面的观点表达清楚。最后在此基础上提出自己的观点。

假如张大伯进了10份报纸用了4块钱 卖了4/5就是8份报纸以0.5元一份卖 就是卖了4元 这个时候已经把本钱收来了. 剩余2份报纸以0.2元价格退回报社所得金额就是纯利润 0.4元 也就是0.04a元

替你写好了,希望会对你有助,
Dear Editor,
l am writing to tell you that it is a very good idea we resume the 7-day May holiday.It's killing two birds with one stone.In one hand,a longer holiday can boost the economy from more tourist's spendings.On the other hand holiday makers can spend more time with their families,or they can spend their longer than normal holiday visiting other parts of our country as well.
And for high school students,they can have more time to relax before their coming exams in June,or they may use the extra vacation to do more revision.It would be a great help for those who are a little behind with their preparation.So all in all,the longer holiday can do more good than bad,at least it is in my opinion.Thank you for your time and your patience for listening.Best wishes!
Yours faithfully
Su Hua

想说明什么问题?关于报酬还是业绩

甲6天的工作量相当于乙9天的工作量,所以乙时间是甲的1.5倍,所以全由甲做需要62天完成,甲先做50天,乙应该做12*1.5=18天完成
总利润=总收入-总支出+总退款
y=x-60+(100-x)*30%
所以y=0.7x-30
y=0,x≈43
所以要持平的话要卖43份报纸

Dear Sally:
You know your wrong ,it is good .but you should changed yourself.You should communicate better with your friend.When you know your friend has more friends Why not happy I think it is important in a friendship,so you should very happy,As the same time,you should know more new friends,too.you communicate with them ,you can feel happy .I hope you feel better soon.
Edito

Sir or Madam,
I’m a student from Xinhua Middle School. I’m glad to learn that you want a few part-time English reporters. I’m quite interested in it.
I think I’m fit forthe job. As a student, I’ve read a lot and have much knowledge in many fields. I’m fond of English and do well in both speaking and writing. Besides, I’m easy to get along with and enjoy working together with others. Above all, I once worked as a reporter for my school broadcasting station. So I’m sure I can do the job well if I get the position.
I’m looking forward to your reply.
Yours faithfully,
Li Hua

解题思路：（1）用喜欢第二版的人数除以喜欢第二版的人数所占的百分比，即可求出答案；
（2）用360°乘以第一版所占的百分比即可；
（3）用总人数乘以喜欢第四版的人数所占的百分比即可；

（1）这次活动中一共调查了500÷10%=5000（人）；

（2）第一版所在扇形的圆心角度数=360°×（1-20%-40%-10%）=108°；

（3）喜欢第四版的人数是：
5000×20%=1000（人），
如图：

点评：
本题考点： 条形统计图；扇形统计图．

考点点评： 本题考查的是条形统计图和扇形统计图的综合运用，读懂统计图，从不同的统计图中得到必要的信息是解决问题的关键．条形统计图能清楚地表示出每个项目的数据；扇形统计图直接反映部分占总体的百分比大小．

Hello everybody.i'm XXX.perhap lots of people know me . i am english speaking race winner in city of hefei.and now i just want to tell reader how to do you can be a winner.first don't worry anything. you need to believe yourself. believe you are the best.do not fear you can't do this.second one is after school you can go too english club to study some english.and you should talk with your teather schoolmate and foreigner.third is everyday watch some foreign language's news.in the class if you can use english to answer this question don't worry about this. just do it!

好了结尾楼主编吧,还有一些字母我没大写,我太懒了 望楼主采纳或再次追问

One possible version:
Dear editor,
I am writing to you to talk about taking up occupations for college graduates. Nowadays many graduates are looking forward to obtaining employment in big cities, not willing to work in the countryside.
As a matter of fact, there are not enough opportunities to satisfy most of the hunters in bit cities while in the countryside talented people are badly needed and a lot of posts are waiting for us. Rural areas are a vast world, you can put your abilities to good use and you’ll be able to make greater contributions to the building of new countryside.
Therefore, I believe we can have as bright a future in the country as we have in the city.
Yours,
Li Hua

略

Dear editor,
I'm writting to tell you something about students using mobile phones.
In my opinion, the classroom is a place for students to study. But some
students carry their cellphones into the classroom, and we sometimes
hear the boring ring in class. There are also someone sending messages
in class. I think that it is a waste of class time. In order to make
the students fix their attentions on their study, I suggest that the
students owning cellphones should turn off their phones in class
and should not receive calls or send messages.

I am an English newspaper reporter. I interviewed student Wang Li----who won the English Contest. She is in class 6, grade 3. The following is my interview records:
Initially, she said she didn't understand English. She said she couldn't speak and remember.Later, in the teacher's help, she began more listening, more reading, more speaking and more writing. Because of that, she has made great progress. She said in the future, she would more effort and help other students.
我觉得写的不是很好！！
请见谅！！

Dear Editor:
I am writing to you to talk about the ticket to the parks.Now,we have a heated discussion in English about whether the park should collect tickets.60 percent of the students agree that parks should collect tickets.They thin that the parks also need money to maintain everything,especially the public equipment.But 40 percent of the students are against it.They think that parks shouldn't collect tickets,because parks are public places and they should be places for people to relax for free.What is your idea?Can we have the discussion in your paper?
I am looking forward to your reply.
Best Wishes!
Sincerely Yours,xxx

晕,
我曾经有一个非常好的同班朋友.课后我们谈到了很多,当我需要帮助她总是会帮我.但后来,一切都改变了.看来她现在是另一个女孩的最好的朋友.看到他们聊天时,我很失落,我知道我错了,但我不知道如何使自己感觉更好.

解题思路：利润=每份报纸的利润×份数，但要注意分前20天和后10天的，卖出的和退回的．

设该报亭每天从报社买进报纸x（份），所获月利润为y（元）．（1分）
根据题意，得
y=20×（0.50-0.30）×150+20×（0.10-0.30）（x-150））+10×（0.50-0.30）x．
（150≤x≤200）（4分）
即y=-2x+1200．（150≤x≤200）（5分）
∵-2＜0
∴函数在150≤x≤200时，y随x的增大而减小，（6分）
∴当x=150时，y有最大值
最大值为：-2×150+1200=900（元）．（8分）
答：报亭每天从报社买进150份报纸时，每月获得利润最大，最大利润为900元．（9分）

点评：
本题考点： 一次函数的应用．

考点点评： （1）根据题意准确列出利润表达式．
（2）利用一次函数求最值时，主要应用一次函数的性质；
（3）用一次函数解决实际问题是近年中考中的热点问题．

解题思路：（1）由B选项的人数除以占的百分比求出总人数，进而求出A选项占的百分比，即可求出a的值；
（2）求出C选项的人数，进而确定出所占的百分比，乘以10000即可得到结果．

（1）由题意得：92÷23%=400（人），
则a%=[80/400]×100%，即a=20；
（2）根据题意得：10000×[400−80−92−48−60/400]=3000（人），
则该市支持选项C的司机大约有3000人，
故答案为：（1）20

点评：
本题考点： 条形统计图；用样本估计总体；扇形统计图．

考点点评： 此题考查了条形统计图，扇形统计图，以及用样本估计总体，弄清题意是解本题的关键．

Wang li:
Hello!!!!!
First of all thank you for your interest in our newspaper has been the support of!!!!!
Don't give yourself pressure oh!!!!!
No!!!! Love you newspaper editor!!!!!

Dear editor,
I have been a faithful reader of your newspapers for many years.I want you to have my opinion on setting off the fireworks.
It is our tradition to set off the fireworks in the Spring Festival.As we know,it is used to creating a happy atmosphere.People express their whises for welcoming the new year,blessings and fortunes.I had seen some accidents in my eyes.For example,causing fire,hurt eyes or ears.
As far as I am concerned,we should be more careful while we set off the fireworks.Children should companied by adults.We should be happy,and safe as well.
Thank you for reading my letter!
Sincerely,
Wu Ming

y=(X+(200-X)x0.2-200x0.5)x30 这个是纯收入和份之间的关系,简化后为Y=24X-1800
Y要大于等于2000时,且Y为整数时,最小为159

Dear Sir, Recently, our class held a discussion question is about our classmates whether it should be half an hour in advance to come to school problems are discussed. We got two conclusions. In our class has 35% of the students agree with half an hour in advance to school, because the morning good memory, can ZaoDou make learning for promotion. But our class 65% of the students don't agree with half an hour to school because it sleep time is not enough, may lead to not listen carefully in class that performance, evening also have no time to eat breakfast, the morning get up will wake up the family The above is that we get the results. Yours sincererly Li Hua

September 16 Sunday sunny
Today ,my friend and I went fishing in the river nearby the city , But we found it was very dirty in the river. People threw lots of rubbish into th...

收入=卖的钱-投资+退款
M=0.5b-0.4a+0.2（a-b）
=0.3b-0.2a