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.

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

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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

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aims

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to preserve the food.

Next

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, 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

Linking Words

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

By contrast

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, it is

also

Linking Words

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

for

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apply

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the pot and the steel net for grating

for

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apply

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charcoal.

Overall

Linking Words

, we can witness the changes

of

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in

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cooking equipment between three main stages.