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阅读理解 Happy, angry, amazed—these are some of the emotions we like to express these days when we're sending a message on our smartphones! That's why many of us now add little pictures to our texts to brighten up someone's mobile screen but we're also using them as a quick way of telling someone how we're feeling. Yes, emojis (表情符号) have become a popular tool for communication. The emoji was first invented in Japan in the late 1990s and the word “emoji” comes from the Japanese words for “picture” and “character”. The number of different images has greatly increased s已知的值。