2

2

làm bừa thui,ai tích mình mình tích lại

Số số hạng là : 

Có số cặp là :

50 : 2 = 25 ( cặp )

Mỗi cặp có giá trị là :

99 - 97 = 2 

Tổng dãy trên là :

25 x 2 = 50

Đáp số : 50

In the modern life, there is an increase in the people leave the countryside and migrate to the city. The objective reason is that in the city, it brings them comfortable life and favorite job. Subjective causes are due to the following disadvantages rural areas bring about push residents away. To begin with, there is no denial that rural infrastructure is not modern and advanced. Roads are quite narrow and degraded. Schools, hospitals are not cared much and remodeled. Especially the quality teachers and doctors here are just little so the inhabitants have less opportunity to develop in all way than in the urban area. Last but not least, the biggest disadvantage in rural areas is that job opportunities are so race. The main job is craft, farming, which bring a relatively small income. With that salary, we can only live through the day, not afford for services, shopping, entertainment… In conclusion, besides the positive aspects, life in the countryside is very much. disadvantage. We all need to consider carefully before choosing where to live.

My life often revolves around books I really love the color blue Because when I was born my mother told me that maybe you are the pen that drew a new life for me.However, since I was a child, I am very happy to hold a pen. The pictures and I draw are full of color and very entertaining.

Tham khảo nha bn:

      Today, the countryside has changed a lot. It is getting busier and more modern. Traffic is getting busier. The streets are getting newer and cleaner. The houses are getting taller, more beautiful and more comfortable. Many schools, clinics, hotels and office buildings are being built and modernized. There are more and more playgrounds for children and many entertainment and sports centers for all audiences. Almost every village has electricity, almost every house has electricity. Life in the countryside just got easier

There are a lot of changes in my village in the recent years. The roads in the village are now very easy to travel on because they are made with cement and brick instead of dirt like in the past. Many villagers have TV and modern electric devices which help them know more about life in the country and even around the world. We had no TVs before and our knowledge was very little. Now we can watch TV, read newspaper and have more chances to do business with others. We also have the Internet which helps us communicate easily and conveniently. Although this development is basically good, it also has some negative effects. Some factories cause air and water pollution. More entertainment centres have been set up. It makes some young people become lazier and they only want to play, they don't want to study hard anymore. I hope that they won't be addicted to entertainment and will study for the sustainable development of their family and their country.

Nguồn: download.vn

My hometown has changed more positively. The first change is the clothing style of local people. They are wearing more fashionable clothes with many different modern styles. Secondly, they have a better life with many up-to-date home appliances such as TV, air-conditioned; refrigerator. Thirdly, internet has made a big influence on reading habit. People no longer buy newspaper, magazines. Infrastructure are improved a lot. Schools have more educational equipment and hospitals are bigger and cleaner. More and more roads are made of cement instead of dirt like in the past so it is very easy to travel on.

Nowadays, energy is being run out more and more so it is one of the most important things of our life. We need to save energy because nobody of us can lives without energy. So why don't we start to do it right in our home? We have many ways to save energy in our home. One of those ways is using electricity, water and gas economically. Such as we should turn off the light in room when we go out or in unnecessary situations, avoid wasting water, shut the kitchen stove when stop cooking. Use a microwave instead of a stove to reheat food. Use rechargeable batteries instead of disposable batteries... Besides, we should use electrical equipments which are energy - saving. Such as using lights and fans that have low capacity, or using equipments which reserve electricty. Not only do these help us to save money but also they work effectively.
In addition, we should frequently check electrical equipments in our home in order to fix opportunely. In summary, we need to save energy so that energy isn't run out and continues to serve human's life.

Đoạn văn này nói về việc tiết kiệm năng lượng ở nhà , coi như có bảo vệ năng lượng nhé !

Nowadays, energy is being run out more and more so it is one of the most important things of our life. We need to save energy because nobody of us can lives without energy. So why don't we start to do it right in our home? We have many ways to save energy in our home. One of those ways is using electricity, water and gas economically. Such as we should turn off the light in room when we go out or in unnecessary situations, avoid wasting water, shut the kitchen stove when stop cooking. Use a microwave instead of a stove to reheat food. Use rechargeable batteries instead of disposable batteries... Besides, we should use electrical equipments which are energy - saving. Such as using lights and fans that have low capacity, or using equipments which reserve electricty. Not only do these help us to save money but also they work effectively.
In addition, we should frequently check electrical equipments in our home in order to fix opportunely. In summary, we need to save energy so that energy isn't run out and continues to serve human's life.