题目

218. I _____ you the exciting news, but you were not at home.  A.meaned telling      B. meaned to tell        C. meant telling                 D meant to tell 答案：D张梅同学进行芽接实习时，结果是接上去的芽没成活，最有可能的原因是接穗与砧木的哪一部分没有紧贴在一起（ ）A．韧皮部B．形成层C．木质部D．髓