["浄化安全一題", "四国際四种安全色は（）。赤色、青色、黄色、緑色", "赤色、青色、黄色、緑色", "赤色、黄色、青色、緑色", "赤色、黄色、青色、緑色"
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国际四种安全色是（）。 红色、蓝色、黄色、绿色
红色,黄色,蓝色,绿色
红色、蓝色、黄色、绿色
红色,黄色,蓝色,绿色
红色,黄色,蓝色,绿色
红色,黄色,蓝色,绿色
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