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

, the highest rate of nickel happened in January,

while

the lowest one occurred in December.

Although

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

at the end

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

last

month, regardless of its fluctuating throughout the year.

According to

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

ratio touched its deepest point in June.

On the contrary

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

This

number increased and declined several times, and

then

reached its peak at the

last

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