Test 1: The graph below shows the average monthly change in the prices of three metals during 2014. Summarize the information by selecting and reporting the main features and make comparisons where relevant. Write at least 150 words.

The line chart illustrates the price variety of copper, nickel, and zinc in 2014 every month.

Overall

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, the highest rate of nickel happened in January,

while

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the lowest one occurred in December.

Although

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zinc sold at its lowest point at the beginning of the year, it ended up being the most expensive metal

at the end

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of the period. Copper was the only material that was quite stable in the first and

last

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month, regardless of its fluctuating throughout the year.

According to

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statistics, nickel started the interval at a high ratio (6%). It went up and down over time

,

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and finished at the lowest rate (1%).

This

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ratio touched its deepest point in June.

On the contrary

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, zinc settled at the bottom rate at the first pace (1%).

This

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number increased and declined several times, and

then

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reached its peak at the

last

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moment. Cooper moderately changed over time. There was a slight motion from every single stage.