Nowadays, sustainable material is a potential science field due to the critical stituation of global warming. However, the use of popular materials is still increasing. The solution to this problem is recycling. The graph below shows the recycling rate of four different materials from 1982 to 2010 in a particular country. Paper and cardboard are recycled mostly with the average rate of 70 percentage of the total amount. Also the rate slightly changes between each year. Glass container has the second rate of about 50 percent, and same as paper and cardboard, this rate has a slight change through years. On the other hand, aluminium cans recycling rate rapidly increased from about 5 percent in 1986 to about 35 percent in 2010

These days, international integration is the essential goal of any country. As English is considered as international language, it’s clear that learning English becomes a trending need. In Viet Nam, besides the fact that Vietnamese is mostly used to teaching and studying at school while English is only a compulsory subject, there is an increasing grow of English center and private school that uses English as the main language in teaching and studying. This circumstance shows an extreme need of learning English, especially throughout students and parents. People learns that with an excellent skill of using English, there will be more opportunities for growing students to adapt to high-paid jobs in the future. That is a meaningful expectation. However, things may go wrong. There are some ambitious parents eagerly long for their children to have an enormous English potential, therefore, since their children was small, they have created a lifestyle of using English to communicate. Those children are grown without the exist of their mother tongue, which makes them can not say a word of their local language or understand other people in their society. We must understand that, we can not integrate into global society without our own character.