Peng'ou Middl School, _______ school in Longhu, held _______ 32nd Shantou Adolescents Science &.Technology Innovation Contest in November, 2016.
A:a; a
B:a; the
C:the; a
D:the; the
观察鸟的形态结构示意图,下列特点与鸟适于飞行生活无关的是( )
长江沿江地带与沿海经济地带以及西部广大地区构成了“H”型的经济格局.