阅读古诗,回答问题。早作裘万顷(宋)井梧飞叶送秋声,篱菊缄香待晚晴。斗柄横斜河欲没,数山青处乱鸦鸣。【注释】(1)井梧:井边的梧桐树。(2)缄:包藏。(3)斗:北斗星(4)河:银河。
下列离子方程式中,不正确的是
——Cathy, could you come to our art club tomorrow?
—— .
—Don't answer the door! Mom doesn't let us do it while she is out.