单词：isopropyl pyridine
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25 Describing Peoples Voices GLOSSARY deejay DJ; disc jockey; a person who plays music and/or speaks on the radio, hosting a radio program * A good deejay is familiar with all of the most popular music. to take (someone or something) to use someone o
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Tigers are the most beautiful creatures on Earth. They look so striking in every way. Their size is awesome. They are much bigger than humans, and ten times more powerful. They are very fast and very agile. But the best thing is their colour and patt
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They tell us how to dress in the morning and when to stop roasting a turkey. When we catch a cold, they tell us how sick we are. Thermometers are in everyday part of our lives, something we usually take for granted.Temperature affects human beings, m
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Todays Luxuries Are Tomorrows Necessities By luxury, we mean a pleasant and often expensive thing that is not necessary. From a historical point of view, things which were a luxury when they first came into being all became necessities later. When th
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