morning everyone! i am on duty today.                                                               
    look at this picture, can you guess what i am going to talk about? well, my topic today is - heroes.                                                               
    napoleon who conquered the europe can be called a hero. mother teresa who helped the poor and the sick can be called a heroine. gagarin who first traveled to the universe can be called a hero. super stars or even supermen in the stories can be called heroes.                                                               
    actually, i am going to talk about one real hero in my heart. he is a famous physicist who studies the universe and made big achievements. he has serious physical problems, and can only work and move with the help of a high-tech wheelchair. he can only move one finger, but he never give up life, and he never stops considering about the most difficult physics puzzles. then you may guess who he is. yes, he is hawking, stephen williams hawking.                                                               
    i admire him and regard him as a hero not only because of his achievements, but also because of his strong personality. his strong will for life, and great enthusiasm for science. these two spirits help him to ignore the terrible disease and keep thinking. he said, "while there's life, there is                                                               
    hope. when you are faced with the possibility of death, you realize that life is precious, you have a lot of things to do."                                                               
小学生英语演讲稿
    英语演讲稿：cherish the water 珍爱生命之水                                                               
    my dear teachers，fellow students and friends： good afternoon．                                                               
    as we all know, the earth is a planet almost covered by water，and it is water made every thing on the earth lively．water is also one of the important part of our environment．though，is there really so much water for us to clean，to produce many things，to play with? how much water are there on the earth then?                                                                                                                               
    most of the water is in the oceans or locked away as ice．the largest volumes of fresh water are stored underground as groundwater，imagine there is only one barrel of water in the world，then there is only a spoon of it on the land，and the water we can use is only a drop of it．now i have to remind all of you here that the single drop of water is never as clean as before，it has been polluted severely by our human beings．                                                                                                                               
    there is a very beautiful river in paris．it is the seine，it runs across the city，people drink coffee, chat on the bank in the day，at night，they enjoy the beautiful scenery in the boat，songs from the river fly into the sky made the river more attractive, the seine is a famous symbol of france；on the west coast of pacific ocean there lies the                                                                                                                                   
    modern city shanghai，another river which used to be a very important transportation route runs through the center of the city，people respected and regard it asmother．it is thesuzhou river，but l believe that few of you would sit beside it，people will be scattered
by the terrible smell of water when walk by．i have to say it is extremely dirty! and we all know that a lot of beautiful rivers in the world also are sharing the same fate with suzhou river． who is the devil? i cant help asking．                                                                                                                               
    many human activities and their by-products have the potential to pollute water. please have a look along the banks of the river, large and small industrial enterprises discharge dirty                                                                                                                               
    the unique earth is the only planet full of lives, the water is just like the blood in the active body, protecting water is saving ourselves. not to waste a single drop of water, otherwise, the only drop of water we could keep in the future would be our tear!                                                                                                                               
    my dear friends, mankind still faces a great difficulty in solving the problems of the environment and development, and there is a grand task to perform and along way to go. the middle school students in china will always cooperate with the young people of the worl
d to protect the environment.