Directions：Study the following picture carefully and write an essay of at least 100 words in which you should：

(1)describe the picture，

(2)interpret its meaning，and

(3)give your comment.

范文：

No Pollution Any More

The picture shows the problem of environmental pollution.On the one hand，fresh air appears on the market together with green food and purified water.On the other hand，it is known to all that green food and purified water were born when food and water were severely contaminated.Thus，we may draw a conclusion that just as food and water，the air of today is also seriously poisoned.

There are many reasons responsible for the phenomenon and the following are the typical ones.

Firstly，in step with the population expansion and economic development，more exhausted or polluted gas is pumped into the air，which is the most contributing cause of the air pollution.

Secondly，although the air is heavily polluted，no enough measures are taken for people who are not aware of the danger brought by pollution.Thirdly，we still lack well—established laws to protect the environment.

Considering all these reasons.I think immediate and effective measures should be put into effect.On the one hand，Qur government should publish stricter and clearer laws to protect the environment.On the other hand，everyone should realize that preventing pollution is something concerning our future.Only in this way，can the sustainable development of our society be realized.

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