阅读下面古诗文，完成小题。
                                                                                                  酬乐天扬州初逢席上见赠
                                                                                                                刘禹锡
                                                                 巴山楚水凄凉地，二十三年弃置身。怀旧空吟闻笛赋，到乡翻似烂柯人。
                                                                 沉舟侧畔千帆过，病树前头万木春。今日听君歌一曲，暂凭杯酒长精神。

“盛年不重来，一日难再晨。及时当勉励，岁月不待人。”陶渊明这首诗告诉我们要珍惜（    ）

It is wise to have some money ________ for old age.

已知x=﹣1是一元二次方程x²﹣mx﹣2=0的一个根，求m的值和方程的另一个根．