乘坐校车时，系好安全带就可以中止刺耳的提示噪音，这种强化属于（）
A.负强化
B.正强化
C.替代强化
D.自我强化
参考答案：A
读所给冷锋示意图，从图中可判断出( )
A．白天气温：①<④
B．夜晚气温：④ >①
C．气压： ③< ①
D．降水：② <③
Although he sometimes loses his temper, his students like him＿__＿for it.
A．not so much
B．not so little
C．no more
D．no less
