Let's take a look at optimistic aspects. In 2050 Ha Noi will become a more liveable city for lots of reasons. The city authorities have built a very careful plan to promote advanced technology to make greener motorbikes to deal with air pollution. In addition, the city dwellers are encouraged to make use of public transport system to reduce tracffic jam. The government will also grow more trees and encourage people to use solar panels.

On the contrary, pessimistic people think that the city life will be a dangerous place to live in because the government cannot control the use of private cars and motorbikes. Besides, they don’t believe that citizens will use public transports because this system in our city are aging and not upgraded regularly. It also take time to find a bus and go to the destination in spite of very short distance. People's life will also continue to be threatened because of pollution such as air pollution by burning fossil fuels, emission from cars and motorbikes, noise pollution from constructing buildings and sounding of transportations. The effects of global warming have great impacts on the city dwellers, higher temperature in the summer and colder climate in te winter.

2.In modern world, technology has played an active role in people physical lives; on the other hand, it can not touch our spiritual lives while art can. One of several reasons related to this is that art help us express our soul. Actually science is a combinations of tools, methods and machines which solve our physical problems. Meanwhile art such as colorful drawings, paintings, rock songs, romantic movies gives painters, film writers a ability to express their ideas and feelings. That is why art probably touch our soul. Other reason is a benefit of enjoying artworks to who enjoy art. It for instance listening to music and watching movie helps listeners and viewers feel relax after a hard-working day fulled of stress. While, techonology can not cause it can only solve our particular troubles, save time and cost, not a spiritual troubles. In short, both science and art play a significant role in human life, people are not able to live without one of those.

Eating out in restaurants has become a common practice for many people due to busy lifestyles and convenience. However, there are several negative effects associated with eating out regularly. Firstly, restaurant meals are often high in calories, unhealthy fats, and sodium, which can lead to weight gain, high blood pressure, and other health problems. Secondly, eating out frequently can be expensive, especially if you choose to dine at high-end restaurants or order alcoholic beverages. This can put a strain on your budget and limit your ability to save money or invest in other areas of your life. Thirdly, dining out can be a social activity that encourages overeating and drinking, which can lead to poor decision-making and impaired judgment. Finally, eating out can also contribute to environmental issues, such as food waste and the overuse of disposable packaging. Overall, while eating out can be a fun and convenient way to enjoy a meal, it is important to be mindful of the negative effects and make healthy choices whenever possible.

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There has been a lot of argument about whether students should be allowed to bring their mobile phones to school. In my opinion, students should not be allowed to bring their mobile phones to school. Let me explain why it is reasonable not to allow students to bring their phones to school.

First of all, I think mobile phones will sidetrack the learning of students. If they use their mobile phones for playing or just for learning purpose, they may not pay enough attention in class because they just concentrate on playing with their mobile phones. So, the academic results of the students will drop due to the use of the mobile phones during the class. Moreover, the learning process of the students may be hindered too.

Secondly, bringing their own mobile phones is not necessary because of the public phones in school. Public phones are provided by the school. So, students can use phones near the school gate or tuck shop. And there are three public phones, which are enough for students to contact their parents. They need not bring their phones to school if their reason is contacting their parents.

What is more, there are enough resources for learning in school already. As a result, students don’t have the need to bring their phones to school. Because of the rapid development of technologies nowadays, computers are invented. So they can use computers for learning. Moreover, computers mostly have the programmes  or function which mobile phones share the same too. Therefore,it is not a must or a need for students to bring their phones to school.

However, some students said that the purpose of bringing mobile phones to school is to contact parents if they face a traffic accident. But in fact, students just use one or two minutes to contact their parents, and they use plenty of time to play games in their mobile phones. This shows the main purpose of bringing mobile phones is not contacting their parents, but to play with their mobile phones on the way back home. Bringing mobile phones in order to contact their parents is just an excuse for them.

To sum up, students bringing their phones to school is just to play with their phones only, but not to contact their parents. Therefore, I think students should not be allowed to bring mobile phones to school.

       Today, there are many students who are using, there are private phones for themselves, but there are some of you who not only use them at home but also bring them to school to use, I partially agree and partly disagree. As for the consent, there are people who need to use the phone as a source of information to look up and study online. but I don't mind more. Because most students bring their phones to school to surf the net, take pictures, text messages, and access unhealthy social networking sites. Therefore, even if the phone can be looked up and useful for learning, it should not be brought to school