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. You should write at least 150 words.

The diagram illustrates the stages in the process of cooking development. It is noticeable that there are three distinct stages in the development of equipment, from the initial container made of stone to the eventual cooking product with multiple functions.

At the first stage

in the development, the primary material of the original bottle is

from

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apply

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stone, which

is aim

Change the verb form

aims

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to preserve the food.

Next

, the shape of

cook

Correct article usage

the cook

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container is flat and made of

the

Correct article usage

a

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clay shield. The final stage presents the latest cooking equipment with many

use

Replace the word

users

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,

such

as the metal bottom and a door for the clear flow of ashes and air.

By contrast

, it is

also

clear that the functions of cooking remain on the top, and there are some tools for supporting

for

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the pot and the steel net for grating

for

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charcoal.

Overall

, we can witness the changes

of

Change preposition

in

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cooking equipment between three main stages.