我国已建成的秦山、大亚湾等十几座核电站，有效的解决了工农业生产中的电力需求问题．目前这些正在工作中的核电站利用的是（）

亚里士多德在《雅典政制》里写道：（梭伦把）法律颁写在木板上，竖立在巴西勒斯柱廊里，所有人都发誓恪守它们，9名执政官还要在那块石头跟前起誓，如果他们僭越了某条法律，他们将献塑一座金像。这一记载说明梭伦为雅典执政官时(   )

    Jack and Anna are good friends. They are Chinese. Jack likes sports very much. He can play volleyball , basketball and football . Anna likes music very much . She can't play ball games. But they both like playing on computers . They like eggs , bread and milk for breakfast . For lunch , Anna likes eating vegetables and fruit , but Jack likes chicken and fish . They both like hamburgers .But they don't like ice cream or rice.