Roman Coin

As it is introduced in a textbook on world history for high school* high school world history textbook, the first systematically minted coin was produced in a kingdom named Lydia that had prospered for two centuries in Asia Minor till Cyrus II subjugated the country in 546 B.C.
Persia and Greek poleis imported this useful invention and stroke individual coins; for example, Darius I had his Mint Bureau execute gold and silver coins that were respectively named dareikós and siglos; and poleis like Athens, Corinth, Aegina, and so on others also produced their own coins. and The silver coin minted in Aegina, one of the most powerful mercantile poleis, became the international currency in the Mediterranean world until Rome attained the dominance there. Carried in the course of throughout the expedition of Alexander the Great, the invention made its way even into India.
Roman people also introduced this system and began to manufacture coins by themselves in the 3rd century B.C. As Rome gradually extended its sway <em>(rule)</em> over many parts of Africa, Europe and Asia, its major silver coin called the denarius got to be became widespread and superseded the Aegina’s silver coin as the international currency of the time.
Although coins executed during the period of Roman Republic were of great interest as artistic works with their various design, they must have been fairly confusing for people who used them. The first emperor, Augustus, who showed amazing talents as a commanding general, an orator, and a shrewd politician, demonstrated outstanding savvy <em>(knowledge)</em> in economical affairs. He established a firm criterion with which how the gold coin, the silver coin, and the bronze coin were mutually converted, and decreed that the coins must have been executed according to the national design.
The Roman coinage faced a crisis several times with deterioration conducted by some of his incapable successors: however the emperor Constantine bent his assiduous effort to improve the coinage, and while the newly minted gold coin, solidus, finally drove out bad coins and circulated in various parts of the world over 1000 years thereafter.
After the discovery of an incredible amount of silver in the New World, or the American Continents, the situation of currency in Europe cha

Hi Satomi, I made suggestions in blue. Hopefully you find them useful.
*This sentence was not incorrect, I just rearranged it for clarity. "High school" can modify "world history" which then modifies "textbook". Then you don't need all the small words in between.

<em>(italics)</em>meant a suggested synonym. I thought the word you used felt a little out of place but to be honest, I had to double check the definition of some of the words you were using. Guess I need to work on my vocabulary :).
Stroke and execute

I was slightly confused on what you wanted to convey when you used "stroke." If you can tell me what you meant maybe I can help further.
"Execute" would probably be better said as "distribute".

A letter to a friend

Writing task 1 (a letter)

You have met an old friend in another city on your last business trip. Now you are going on another business trip in the same city and want to meet him/her again. Write a letter to your friend and say
- Express your excitement about the last meeting.
- Give details about your new business trip.
- Suggest an arrangement to meet again.



Dear Bob,

How is everything going over there? I hope this letter finds you and your family well.

I was really freaking out when I ran into you during my month's montly business trip to Singapore. I had would have never expected that you are living for you to live in that amazing city. I want to let you know that I am going on another trip at the beginning of next month, and I am hoping to see you again.

This trip will started starts on 1st August 1st and lasts for a fortnight two weeks. I will be busing busy with my work on weekends weekdays* and have nothing related to business on weekends. So that will be the good time for us to meet each other. As I did last time, I will be staying in the Sunshine Hotel, close to your home.

I want would like to visit your home this time and hope you and your family will treat me* join us. Maybe we don't need to eat out. Just make some Cantonese food at home, we can try to make some Cantonese food at home. See you later.

Lots of love,

Jim.

Hello hitperson, my suggestions for your assignment are in blue. Hope you find them useful.
* I was a little confused as to what you were trying to say here, but I think you just mixed up weekdays and weekend.
*While not incorrect, saying, "...hope you and your family will treat me.." sounds a little rude and forward. Corrected for politeness, not necessarily grammar.

Internet finance and Construction of credit information system Summit 2015

In recent years, there are has been a coexistence of risk and opportunity in the internet finance market.
To help the public to finance investment and invest with more protection, the last day of the Money fair 2015 held the 2015 summit of Internet finance and Construction of credit information systems. Zhou Yupeng, the chairperson of the Shanghai Modern Service Industry Association, attended the summit and delivered a speech. Yang Dong, assistant Dean of Renmin University of China Law School, and Yu Yu, deputy general manager of Shenzhen Qianhai credit information, as well as other experts on the Internet banking and credit system construction made useful suggestions to help financial investors to avoid risks and suggested reasonable and effective protection advice of their own interests and assets.

Hello Monica, I wrote my suggestions in blue. I hope you find them useful.

fast food

The Throughout their whole life, fast food and improper diet have been and remain hazards to the health of children health. Many American teens, fans of such food, face with the problem of obesity and diabetes.
According to the researches, many children have diabetes and obesity are obese because of improper diet and their love to of fast food restaurants such as McDonald’s, Taco Bell, and so on. The problem is that we don’t know the chemical composition of our food because the producers hide it. It’s worth it to pay attention to the absence of calorie information on fast-food packaging, but if you can find any information you won’t may not* understand it all.
I entirely agree that fast food is dangerous, but I think this problem is common not only in the United States but all over the world. For example, this problem concerns Russia as well. People, especially students and senior pupils, are always in a hurry, especially students and senior pupils, and they don’t have time to eat proper food. Frequentlywe don’t have time during the day to eat at all and have to have a snack in the transport. Certainly it influences our health and we begin to gain weight or have problems with digestion. On the one hand fast food is a good opportunity for busy people to have a snack on the way to somewhere their destination; on the other hand it destroys us from within.
In summary, I would like to say that we are what we eat. If you want to be healthy and avoid problems with the health, you should choose food carefully taking into account calories and vitamins. Luckily, people today are more health-conscious and they realize that eating lots of fast food can be dangerous.

Hi Kate, I added some suggestions while trying to preserve as much of your original writing.

*Replaced "won't" with "may not" because the usage of "won't" is presumptious of your reader/audience. It implies your reader is perhaps not intelligent enough to comprehend nutrition labels.

I hope you find these suggestions helpful.

Are these sentences correct?

1) You wouldn't recognize her if you met her now.
2) If she had received the message yesterday, she would have come right away.
3) What a pity you don't like such kind of music.
4) I wish I could skate!
5) If I were you, I wouldn't sell the car.
6) Unfortunately, they won't come today.
7) What will you do when you are broke?
8) He would have joined us if hiss his boss had allowed him to leave earlier.
9) If he had the facts, he would have change his mind.
10) We could have a picnic if our friends arrived tomorrow.

#7 is the only sentence I am confused on the exact meaning of. I made a suggestion based on what I thought the sentence's meaning was. If you could clarify, I could be of more help.

Also, for #3 I would personally replace "such" with "this" or "that". While not incorrect, using "such" in ths specific way is a little awkward sounding (just my opinion).
Overall, as you can see, only a few corrections were made- good job!!

Look and Write

The picture below shows us depicts the situation that where a boy don't doesn't want to go to school, for because he thinks he can know find everything to know from his mobile phone.
As far as I'm concerned, I don't agree with what he said. I think it's a terrible thought. First of all, as we know, mobile phones bring us convenience because of it's intelligent they are so advanced, but it also shows its a side effect is that that we can easily get addicted to it them. Secondly, mobile phones is are just like an assistant- it they can help us search for information but can not be our teacher. School is like a small society: It can Not only can it teach us knowledge but it also make teaches us know how to get along with others, which mobile phones can not provide to us. Last but not least, school can help us become a mature man in all directions all sorts of ways.
All in all, it's necessary to tell children that when they go to school it is not just for knowledge but also for something else much more. So I hold the belief still believe that mobile phones can not take the place of school.

Hi meisruan, I made suggestions in blue, I hope you find them helpful. Also, a suggestion for your writing in the future, place spaces between your punctuation (ex. periods or commas) for general formatting and structure.
Compare:
"...provide to us.Last but not least,school can help us be a mature man in all directions."

"...provide to us. Last but not least, school can help us be a mature man in all directions.

Difficulty sleeping

Sleeping is a process in which the human's body recovers its energy. If people a person couldn't doesn't sleep very well enough, they he/she would not have enough energy to do their routines, think very well, etc. In my opinion, insomnia is one of the a new problem of people who live in the progressive societies. Based on scientific contexts findings there are some solutions to overcome this problem.

First, don't drink coffee or tea 2 hours before your bedtime; these beverages are full of caffeine which is a type of chemical substance that might disturb your sleeping. Second, don't go to bed until you will be are sleepy. Some experiments show that going to bed before bedtime makes people bad sleeper sleep worse. Third, try to get away stress from yourself get rid of your stress; relax your body, and think about good things, and breathe deeply until falling you asleep. Finally, try to exercise more and more frequently. Exercising will make your body tired and your soul free of stress, so you will fall asleep automatically. In addition, make an exercise is very useful beneficial for to your body.

Hi 梅迪, while your writing wasn't entirely incorrect, I made some suggestions so your writing is more fluid and less awkward.