28、根據要求完成下列各小題。

①__________

THE Earth is about 4,600 million years old．Many of the things that we have done are good, but many more are not good for the Earth．

Pollution is ②（地球上的一種嚴重問題）．In big cities cars and buses have polluted the air．Many people in cities now have very bad health problems．

③（工廠也對土地和水造成了污染）．As a result, many rivers and lakes are now polluted．

All over the world, people have cut down millions and millions of trees．Did you know many kinds of animals and plants are now disappearing （消失)? In particular, trees are very important ④because they produce oxygen （氧氣）and control the climate．

Now, many people are beginning to take these problems seriously．They are making wind generators （發(fā)動機）and planting new trees．There is a group in our class that picks up the garbage at school．Whether the weather is hot or cold we always do it．⑤I think we are setting a good example to everyone else．

I hope, in the future, the sky can be clearer, the water cleaner, and the land greener．Then both people and animals can have a greener Earth．

1．請在①出給出文章的題目。

2．請把②的漢語翻譯成英語。

3．請把③的英語翻譯成漢語。

4．請把④的畫線部分翻譯成漢語。

5．請把⑤的畫線句子翻譯成漢語。