范文 | Word count： 195
The graphs demonstrate the change of ozone-hole size over Antarctica and the emission of three different ozone-damaging gases from 1980 to 2000.
In general, the ozone hole size enlarged, increasing from 500 thousand square Km to about 2000 thousand square Km. But it witnessed a sudden decline to about 1200 thousand square Km from 1990 to 1994 before increasing sharply to almost 4000 thousand square Km.
The second chart is about the emission of some destructive gases. In 1980, CFC-11 (A) was the major gas destroying ozone layer, which mounted to 70 million tonnes. And CFC-12 (B) was almost 1/3 of CFC-11, with the amount of 25 million tonnes. In the next two decades, A witnessed a sharp decrease to almost 5 million in 2000 while B kept increasing stably to 50 million tonnes, becoming the dominant damaging gas. The emission of N2O (C) appeared in 1990 and then increased dramatically to about 40 million tonnes in a short period of just 10 years, thus becoming the second important damaging gas.
To sum up, the ozone hole was becoming larger and the main reason was the increasing emission of the gas of CFC-12 and N2O. |
范文 | (Word count： 300)
It is of great significance for we human beings to do some leisure activities in order to release pressure coming from either study or work, such as reading books and watching TV. For some people, they prefer to read books because they think it’s a good way develop their ability of imagination and language skills, while others give their support to watching TV programs. As for me, I agree with the former argument that reading books improve people’s imaginative and lingual skills.
People who spend their spare time in reading books are more likely to be immersed in a peaceful environment to do some thinking or reflections. When people read books, they usually put themselves into the plots of articles and follow the directions of the author. This means they always produce a live scene of the story in their minds according to the words they read, which contributes to the improvement of their comprehensive ability as well as the imaginative skills.
However, those who prefer to watch TV in stead of reading books when they are free tend to rely too much on the audio and visual information coming from actors ’ performance, and therefore, are less likely to have a deep thought about a certain thing. For example, there are too much noise and too many images in a TV program, making it difficult for people to be concentrated. In addition, because of actors’ performance, it’s hard for people to imagine about a different scene of the plot. As a result, people’s imagination and language skills will be limited.
To conclude, I ’m for reading books rather than watching TV as it can provide people with more quite time to really be into the words and think about something, and lead to the improvement of their imaginative and language skills. |
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