sc 求解 ron

yayasherry

在ron神笔记上看到一个题的解释
in up to 40% of people是in up to搭配不对？还是in x% of people搭配不对？

还有青色的句子
in 40% of these people, the levels of the nutrients are low.
都好后面的主语有要求吗？（比如必须是前半句范围同类的？

谢谢~