如图是某晶体熔化时温度随时间变化的图象,则该晶体的熔点是( )
A:10℃
B:40℃
C:50℃
D:60℃
与长江三角洲城市群形成不相关的自然条件是( )
Do you see the sea? The sea is blue,and it is very large(大的).The sea looks beautiful in a sunny day. If(如果)you swim,in the sea,you know that the water is salty(咸的).Do you like the sea?
①社会存在决定社会意识
②先进的社会意识对社会发展起推动作用
③价值选择是价值判断的基础
④社会经济的发展取决于生产关系的调整