以下哪种数据结构最适合频繁在末尾进行插入和删除操作，并能快速访问任意位置的元素？

In the context of the English language, which term is used to compare two things?

记忆研究中发现，当人们有‘舌尖现象’时，以下哪种做法更有助于记忆的恢复？

在计算 \( K = \int_0^1 x^2 \ln(x) \, dx \) 时，使用分部积分法，若设 \( u = \ln(x) \) 和 \( dv = x^2 \, dx \)，则在计算 \( du \) 和 \( v \) 时需要注意什么？

Which tense is typically used to describe an action that was happening at a specific time in the past?