more than 70[ percents] of the students [percent]为什么加S percent可数吗

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morethan70[percents]ofthestudents[percent]为什么加Spercent可数吗morethan70[percents]ofthestudents[percent]为

more than 70[ percents] of the students [percent]为什么加S percent可数吗
more than 70[ percents] of the students [percent]为什么加S percent可数吗

more than 70[ percents] of the students [percent]为什么加S percent可数吗
错了,percent不能加S,它不可数的.

不加s 加了就错了