Cultures—National and International Trend of the united world is more and more obvious these years.As is vividly shown in the picture, an American girl who is in the chinese costume is smiling in the photo.The source of trend is mutual understanding in cultures. There is no doubt we have lead a mordern high-tech life and communication between people is vastly changed.People from differnent countires can express their opinion in the Internet.Therefore,various cultures are being understood and exchanged.There are a great number of foreigners who are willing to study Chinese which is thouht to be mysterious and interesting.For chinese ,many tend to study foreign language and intended to watch foreign movies to compare notes. Cultural exchanging represents a harmonious world existing .A better world need us to build. It's our duty to take the responsibility to construct a more wonderful world!

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The protection of environment ( a graph composition) At the first glance at the picture,，so a large number of ships to catch fishes that until recently less and less fishes live in the sea. .However, less as the fishes are people disregard the phenomenon for they are in the pursuit of interest. we can't deny the fact that the biological cycle between nature and human has narrowed.And this proved painful.Not only people pursuit profit from the sea ,but also from the forest , land ,sky .Quantities of animals are going to be extinct.Trees on the mountain are hacked down . With the development of cities,many industries emit gas to the atmosp-here which has become polluted one.Thus ,nature gets revenge on human in turn.It rains acid rain and the sea level has been rised that threatened the coastal cities and people who live in there. All of these caused a crisis of pursuiting profit.We should begin to believe that the imporatance of the nature we live in ,and that protection meaures must be taken immedi-ately. Firstly,government should take the lead to encourage people to protect environmen--t and publish relevant policies about it. Secondly ,social supervison is great importance ,th--ose who are against the law should be responsible for their behavior. Thirdly, to enhace in-dividual qualities and to learn informative knowlege for protecting environment . Human liv--e in harmony with nature is not a golden memory.