ROUND(RAND()*(4.1-3.5)+3.5,

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ROUND(RAND()*(4.1-3.5)+3.5,
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ROUND(RAND()*(4.1-3.5)+3.5,
ROUND(RAND()*(4.1-3.5)+3.5,

ROUND(RAND()*(4.1-3.5)+3.5,
用随机函数RAND生成3.5至4.1之间的随机数,再用ROUND将结果四舍五入,保留一位小数.