A Variety of Stones各种各样的石头
There are a number of different kinds of building stone is popular because it is hard,lasts a long time,and is easy to cut and is often placed over rough surfaces to make them more le is the most beautiful building ke limestone,it is very is not usually used in buildings because of its ite is even stronger and harder than limestone and is used most often for public ver,it is hard to cut and marble,granite can be polished to a shiny ite,limestone,and marble are just three of the many different building stones used today.
