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标化比的数值大于1，说明（ ）。
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下列哪项是光化学烟雾事件的特点之一（ ）。
苯环上的一个氢被烷基取代。其毒性发生改变（ ）。
Laura: little articles of it, they"re ornaments mostly! Most of them are little animals made out of glass, the tiniest little animals in the world.[...]Oh, be careful—if you breathe, it breaks!Jim: I"d better no take it. I"m pretty clumsy with things.Laura; Go on, I trust you with him![She places the piece in his palm.]There now—you"re holding him gently! Hold him over the light, he loves the light! You see how the light shines through him Jim; it sure does shine!Laura; I shouldn"t be partial, but he is my favorite one. Jim; What kind of a thing is this one supposed to be Laura; Haven"t you noticed the single horn on his forehead Jim; A unicorn, huh Laura; Mmmm-hmmm!Jim; Unicorns—aren"t they extinct in the modern world Laura; I know!Jim; Poor little fellow, he must feel sort of lonesome. Laura; Well, if he does, he doesn"t complain about it. He stays on a shelf with some horses that hasn"t have horns and all or them seem to get along nicely together. Do you see any connection between Laura"s personality and the unicorn
But all this part of it seemed remote and unessential. I[Nick]found myself on Gatsby"s side, and alone. From the moment I telephoned news of the catastrophe to West Egg Village, every surmise about him, and every practical question, was referred to me. How do you understand the word "great" , which is used to describe the titular hero Is he really great
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