Vừa rồi bên China có ra 1 dạng bài mix 2 lines (bên mình tuần trước cũng ra mix Bar + Table. Hì hì…) Mọi người xem bài mẫu dưới của examiner  nhé :)))

The first line graph represents how large Antarctic Ozone layer hole was during the period from 1980 to 2000. The second line graph illustrates the number of damaged gases produced over twenty years.

Overall, during the whole period from 1980 to 2000, the size of Antarctic Ozone layer hole was tremendously increased although there was a slight fluctuation mainly because of the increase in the production total of H2.11 and H2.

It is noticeable that the size of Ozone layer hole experienced a dramatic increase to 150 square kilometers from 1982 to 1985, and the same trend could be also witnessed between 1995 and 2000, while it remained stable at approximately 150 square kilometers although there was a slight fluctuation from 1987 to 1994.

It can be seen that harmful gases were divided into three types. The production output of H2.11 had an upward trend during two decades although it fluctuated marginally from 1985 to 1988, which was still substantially greater than that of H2. Furthermore, H2O2 was the only gas which suffered enormous decrease after a smooth increase in 1987.


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