——I can hardly believe my eyes. Is that you, Lucy?——Yes. It has been almost 20 years______ we were together.
下图为某日甲、乙、丙、丁四地太阳位于正北或正南方时太阳高度示意图。读图,甲、乙、丙、丁四地中( )
“辛苦遭逢起一经”中“一经”指的是____ ,“汗青”指____。(古代用竹简书写,先把青竹简用火烤干水分,以便书写和防蛀,叫汗青。“丹心”指 ____,“干戈”泛指 ____ 。