水蜜桃味甜,毛桃味酸,将水蜜桃的芽接到毛桃的枝上去.结出的成熟果实其味为( )
A:酸甜各半
B:甜
C:酸
D:不确定
对下列各句有关文学常识的表述,正确的一项是( )
Jack is late again. It is ______ of him to keep others waiting.