演讲稿

smoking and health

today smoking is a widespread habit ali over the world. not only the old, the youth, but also middle school students have been engaged in smoking. many of them think that smoking is a smart symbol.

however, smoking is harmful to one’s ,health. it contributes a lot of lung cancer, from which many people have died in the past years. it can also cause many other diseases. in a word, if you smoke, you do have a much greater chance of losing your health. furthermore, scientific research shows that smoking is not only harmful to smokers themselves, but also a threat to public health, especially to women and children. therefore, many countries have made laws forbidding smokers to smoke m public places such as cinemas, stations, hospitals, and so on giveup smoking! if you don’t smoke, don’t start. give upsmoking for the sake of your health, for the sake of your family, and for the sake of the whole world.

schoolmates:

when you look the lovable animated cartoon, plays is in a stew human's computer games, rides the fast train, is answering transoceanic telephone time, ......not only your might once realize the science the strength, the science changed this world, also changed our life, the science side us. opens for the 20th century the grand chapters, not only we discovered the humanity to experience the blood and the fire baptism in these hundred years, has created the innumerable scientific miracles. 19th century france famous science fiction writer of fiction verne fictionalizing, at that time let the human be inconceivable, he fantasized moon landing travel, the airplane, the long-range gun and so on, all 11 became the reality in the 20th century. in the 21st century today, the high tech is ubiquitous.

as cross-century one generation, how posture should we adapt the new century by, the load get up the new century heavy burden? not only science and technology changing with each new day, causes the science to serve for the most advanced technique, also more and more many seeps to during ours daily life, this needs us who is in the young people time to deeply love the science, the study science. participation science and technology “five small” competition, reading science and technology books, caused me to understand many truths. the precise robot, does not use the fuel the automobile, the hypothesized soccer game, high tech information transmission and so on, each one vivid interesting phenomena, aroused me to explore the science the desire.

good morning, my dear teachers自我介绍+开场白 what is friendship? the answers may be different. but one thing is clear that friendship is the most important ingredient in the recipe of life. we cannot live without friendship just as we cannot survive without air and water. friendship gives us a feeling of security and warmth, and friendship encourages us to go ahead all the time.everyone needs friends and is eager to get friendship. when we feel happy, we can share our happiness with friends. when we feel gloomy, friends will comfort us. if we are arrogant, our friends can persuade us, and they can make us confident and brave when we are discouraged.

friendship is valuable. it can touch your heart and give you hope. many people are proud of having a good friend. true friendship must be sincere and must not have conditions. if you help your friends for no reason but simply because they are your friends, this means that you regard your friends as yourself. this is true friends.

true friendship should be based on mutual understanding, not on mutual benefit. moreover, both must also have similar ideals. if not, their friendship still cannot last long. sometimes, people have good friends when they are young and studying in school. however, after graduation, when they are working in the society, their friendship will soon come to an end.