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How to set up a dynamic R Quiz, with the choice of 5 elements, the first of which should be the correct solution, the others options must be incorrect?


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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Welcome to ShenZhenJia Knowledge Sharing Community for programmer and developer-Open, Learning and Share

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