Dear the wisest human:

        We are both a part of earth's creatures. No matter you or I  am essential to this world. We used to have a good place to play,  it's becoming more and more difficult for us to find such joyful place. And I am afraid  we will no longer be beautiful in the future. Because my mom  told me that there is a big hole above us, which is able to release a great  deal of ultraviolet rays, so that  it  will make our skin  cause some ugly spots, just like that we wear clothes which can't take off forever. Please! Please help us! We want back our happy heaven and attractive appearance.    

       According to the reports, what causes the abnormal hole is the Chiorofluorocarbons (氟氯碳化物 ). To make this situation better, we should do something immediately. First, we should cut down on the use of air conditioner, which occupies the most part of destruction. Because there is much coolant inside the air conditioners. Second, don't use products which can let out CFCs while using them, such as pesticide. If it is necessary to use them, try to use CHF(氫氟碳化物)-included products instead. Finally, we should not just make empty promises but take actions practically. We only have one Earth, for you, for me and for a better world, do our best!

                                                                                                         Sincerely,  

                                                                                                             Pen

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