在处理有困难童年的客户时，以下哪项最有助于帮助他们重新获得对身体感觉的意识？

A study indicates that a certain vaccine is effective in preventing a disease that can lead to severe complications, particularly in vulnerable populations. If the vaccination coverage in a region falls below the recommended threshold, what is the most likely consequence?

关于情绪的认识，以下哪项描述是正确的？

设函数 f(x) 在 x = 0 处连续，且 lim(x→0) [f(x) / x] = 1，下列结论中一定正确的是：

短视频平台通过电商销售产品，这种模式的主要特点是什么？