The pupils in our school like reading after lunch, most of ________ seated on the grass unless it rains.
A:them
B:whom
C:that
D:who
如图是《战国七雄形势图》,其中①②③④所示位置( )
祖国各民族文化异彩纷呈,这直接体现出( )
长江中游沿江地带的钢铁工业基地是以下列哪个城市为中心的:( )