《卜算子•咏梅》“待到山花烂漫时,她在丛中笑”这句词讲的是____。
(Ⅰ)求圆C在直角坐标系中的方程;
(Ⅱ)若圆C与直线l相切,求实数a的值.
— Gary, have you received his _________ to the party?
— Yes, I've promised to take part in it on time.
—“Les Miserables” is a wonderful film.—_______. I've never seen such a moving film before.