问题
填空题
红宝石的热处理常采用（）气氛，以消除（）色调，还可以消除（）包裹体.
答案
参考答案：氧化、杂、金红石
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红宝石的热处理常采用（）气氛，以消除（）色调，还可以消除（）包裹体.
参考答案：氧化、杂、金红石
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| Kids like to play games (游戏). Do you often play hide-and-seek (捉迷藏) 1 your friends? A lot of kids often play this game and love to play 2 . Hide-and-seek is a very 3 game. Maybe (可能) your father and mother 4 the game. Maybe your grandparents play it, 5 . 6 do we know this? Old stories (故事) tell us 7 hide-and-seek. In old photos, we can 8 the game, too. Boys and girls play 9 old games. Big kids tell small kids about 10 . And so (因此) the games live on (继续存在). | ||||
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