( 4 ) how the people ' s thinking ways and system of research methods are changed in the above process of thinlking , choosing and making policy . in chapters l - 3 , some typical models of western school change in the 20 , , century are commented on . the author analyses emphatically the characteristics of 3 theories for change and strategies in dewey ' s chicago experimental school , montessori ' s children ' s home and neil ' s surnner hill school in the upper half century 1 - 3章评述了20世纪西方学校变革的若干典型范例，首先重点分析了上半世纪杜威的芝加哥实验学校、蒙台梭利的儿童之家和尼尔的萨默希尔学校在变革理论和策略上的特征，概括出这一时期的变革方法论主要特征，即以革新的方式变革学校，以实验方法论思想丰富变革策略，以思维的连续性原则超越传统思维的二元对立。
While newly - installed armour protects those inside , the gunner stands with the upper half of his body exposed , making him far more vulnerable to roadside bombs and gunfire . others have been crushed as vehicles overturn . but specialist michael floyd , 19 , said : " i am not a big fan of this thing 报道说，装甲车炮手的死亡率很高，站立作战的方式让他们的上半身暴露在外，这使得他们极易受到路边炸弹或枪手的袭击此外，当装甲车发生翻覆时，车中士兵也容易被车轧伤或致死，而新款装甲衣先进的内部结构能对士兵起到更加有效的保护。
