题目

—Excuse me，could you please tell me if the meeting ________ on time?—If it ________ tomorrow，we'll have to put it off. A . will hold; snows B . will be held; snows C . will be held; snow D . holds; will snow 答案：B14．生活处处有化学，化学与生活密切相关．（1）“蜂窝煤”被加工成多孔形状的原因是增大了煤与氧气的接触面积，使其燃烧更充分．（2）汽车表面喷漆可以延缓钢板锈蚀，其防锈原理是隔绝空气中的氧气和水分．（3）长期饮用硬水对人体健康不利，生活中可用肥皂水来鉴别硬水和软水．