标题: 阅读中遇到关于数学ratio/rate的问题，请好心人解答 [打印本页] 作者: wwwwyc 时间: 2017-12-1 10:07 标题: 阅读中遇到关于数学ratio/rate的问题，请好心人解答 内容一：NAEYC recommends no more than nine children per adult; the recommended ratio drops to 1:6 when some children are younger than 2.5 years old.
问题一："nine children per adult" 不是1:9吗？ 我理解的是1:6 比 1:9大，为什么分号后的动词要用“drops to”？
内容二：
For caretakers in at least seven states, including Louisiana, Maryland, and New Mexico, this scenario is not imaginary. The maximum legal adult-to-child ratio for groups that could include 2-year-olds in these states is set at a maximum of 1:12—the highest in the nation. In a least 23 states, including Florida, Kansas, New Jersey, and Washington, it’s 1:10 or higher.
问题二：我对“seven states”和“23 states”的 比率做了一个简单表格进行比较，希望帮我看看我理解的对吗？