A:y=±14x
B:y=±13x
C:y=±x
D:y=±12x
A single-parent child should have the right to enjoy normal parental love from both just as his other peers, which some psychologists see as _____to their emotional well-being.
下列是一位同学测量记录的结果,正确的是 ( )
最近几年,冰岛每年丧失111亿吨冰,按目前的消融速度,到2200年,冰岛冰川将彻底消失,意大利的威尼斯将在百年内彻底被淹没,上述材料表明,造成海陆变迁的原因之一是( )