如果需要向一个文件中写入格式化的字符串，并希望写入后立即刷新输出流，应该使用 `PrintStream` 类的哪个方法？

根据NLP的理念，人们应该如何处理对现实经验的记忆？

In a study on the effects of music education on cognitive development, researchers found that students who participated in music programs scored significantly higher on standardized tests compared to those who did not. Which of the following conclusions can be drawn from this study?

关于金庸小说的国际影响力，以下说法正确的是：

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：