单词：ozon layer
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04 The Wizard of Oz (Dorothy kills the bad witch by accident.) Glinda: Are you a good witch or a bad witch? Dorothy: Who, me? Im not a witch at all. Im Dorothy Gale from Kansas. Glinda: Oh. Well, is that the witch? Dorothy: Who, Toto? Toto is my dog
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I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea
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There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th
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I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea
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