A:m≤﹣1
B:﹣1≤m<0
C:m≥1
D:0<m≤1
关于激素和免疫的说法,错误的是( )
该事件最有可能是____(填写一个你认为正确的序号).
①掷一个质地均匀的正六面体骰子,向上一面的点数是2;
②掷一枚硬币,正面朝上;
③暗箱中有1个红球和2个黄球,这些球除了颜色外无其他差别,从中任取一球是红球.
读图判断小河的流向大致是( )
Progress suggests a person's ability to change the way he is living at the moment and it must ______ a better life and a better way of doing things.