一、选择题(每题只有1个选项符合题意) 1.以下情况中不会发生化学变化的是(). A.石灰水长期暴露在空气中B.用干冰制造舞台云雾 C.用熟石灰改良酸性土壤D.用食醋除去热水瓶内胆壁上的水垢 2.汽车安全气囊内所装化学物质，能在碰撞后roms内，生成一种空气中含量最 多的气体，该气 First, multiple-choice questions (only one option per question corresponds to the intended meaning) 1. The following circumstances do not occur chemical changes (). A. lime water exposed to the air in the long-term B. use dry ice to create stage clouds C. with hydrated lime Improve the acidic soil D. Use vinegar to remove the scale on the wall of the thermos bottle 2. The chemical substances contained in the airbag of the car can generate a gas with the highest content of air in the roms after the collision.