题目

下列变化中，既不属于化合反应，也不属于分解反应的是（    ） A. 硫在空气中燃烧                   B. 石蜡在空气中燃烧 C. 过氧化氢分解生成水和氧气         D. 铁丝在空气中燃烧 答案：B Neither of them thought highly of him and they both tried to _____ him in his work. 　　A.hamper   B.support   C.depress  D.prevent