Many governments think that economic progress is their most important goal. Some people, however, think that other types of progress are equally important for a country. Discuss both views and give your opinion.

The diagram on the left

illestrates

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illustrates

the process by which

cement

is produced while the one on

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the

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te

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the

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right depicts how

this

cement

is utilized to make concrete for building houses. overall

cement

production consists of several stages which are crushing, mixing, rotating, heating and grinding, while the ingredients for concrete production are:

cement

, water, sand and gravel.

firstly

, limestone and clay are turned into powder by a crusher and are combined with each other by a mixer.

Next

,

this

combination passes through a rotating heater, where is heated and rotated simultaneously.in the final stage,

this

combination is converted to

cement

by a grinding machine.for concrete production, water,sand and gravel are used. Gravel accounts for half of

this

mixture, while sand

cement

and water make up

for

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25% at 15% and 5% of the mixture respectively.

Then

this

combination is blinded by a mixer to create Concrete.