燃燒是指可燃物與____作用發(fā)生的放熱反應(yīng)，通常伴有火焰、發(fā)光和（）發(fā)煙的現(xiàn)象



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Part I Writing （） Directions: for this part, you are allowed 30 minutes to write an essay

commenting on the saying "Respect others, and you will be respected. " you can cite examples to ilustrate your views. you should write at least 150 words but no more than 200。