A：keeping control of thoughts is very difficult
B：thinking is a kind of activity limited to humans
C：mammals evolved much more slowly than humans
D：mammals had poor awareness of dangers and opportunities
观察下图中各组图形，其中不是轴对称的是（ ）
中国有被九段线拱卫着的约300万平方公里的主权管辖海域。海运兴，则国运兴。请回答：
下列说法错误的是（ ）
