精选优质文档-倾情为你奉上一 The diagrams below show the stages and equipment used in the cement-making process, and how cement is used to produce concrete for building purposes. Summarise the information by selecting and reporting the main features, and make comparsons where releant. The first diagram indicates the stages and equipment in the process of making cement, and the second one illustrates how cement and other materials are mixed to produce concrete for building purposes. Cement
