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  3. You should spend about 20 minutes on this task.The diagrams below show stages i

You should spend about 20 minutes on this task.The diagrams below show stages i

游客2024-01-09  25
问题 You should spend about 20 minutes on this task.
The diagrams below show stages in the development of simple cooking equipment
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
选项
答案 The three diagrams illustrate how basic cooking devices developed from simple fires to more complex equipment.
    The first stage was a simple cooking pot balanced on three stones over a fire of twigs and grass. The second shows how the same equipment was improved by building a shield made of clay around the fire. This was obviously to prevent heat loss and to protect the fire from winds.
    The final diagram shows a further stage in which the fire is completely enclosed by a metal base in order to increase the control of the heat and the level of protection. There is a door at the front where air can enter and ashes can be removed. Charcoal is used as the fuel and it is burnt on a grate that sits inside a shield lined with clay. In addition there are metal supports so that a pot can balance on the stove and a handle for easy transportation.
    Overall, the features of the stove in diagram C indicate that the efficiency of the cooking equipment was greatly improved.
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