The factory ______ its waste into the river, but now it deals with the waste in a new way.

    My name is Lucy and this is my grandfather．His name is Tim and he is my  best friend．My grandfather is 64 years old and he is retired now,so he has much time to be and play with me．I love him very much and I know he loves me too．

    He lives with me．my father,my mother and my brother Kevin．We live in a big house．My grandfather is a very tall and strong man!Can you see me on his shoulders (肩膀)in this picture?He is really strong!My grandfather always knows what l want to do or to eat or what I feel inside!When I am sad，he makes me laugh with his funny faces．Every night before I go to bed，my grandfather tells me stories，and he even sings for me!

根据材料内容选择最佳答案。

材料一：2015年底，新一期全球超级计算机500强榜单在美国公布，中国“天河二号”超级计算机连续第六度称雄。“天河二号”六度夺冠的背后是40多人的团队日复一日地为超级大脑保驾护航。

材料二：2016昆明网球公开赛中，彭帅与张凯琳的比赛在13：30准时开始，两人各赢一局拖入决胜盘后，彭帅体力下降很多，术后遗留问题也暴露出来，在一记有力回球后，她痛苦地蹲在地上。稍后她起身缓缓后退靠到墙边，左腿不自主抽搐着，彭帅双手捂眼，擦拭着因剧痛而忍不住流下的泪水。在随医务监督离场治疗了几分钟后，彭帅在全场观众如雷的掌声中回到赛场，再尝试打了两分后，几乎完全无法移动的她不得不宣布放弃比赛。赛后，获得冠军的张凯琳这样评价比赛“勇敢者的对决没有失败者。”

阅读材料一、二，分别回答下列问题：

对于公元前594年和公元509年，下列表述正确的是（　　）