15. 低重力篮球比赛16. 改善听力技巧

13. 许多网上剧院14. 来自地球的商品  

9. 住在地球上的优势 10. 值得冒险

11. 毕竟12. 害怕外星人

7. 错过了它的第一部分8. 开展;执行

5. 通过修建室内操场6. 从地球上搬走

1. 进入太空2. 围绕着太阳转

3. 达成—致4. 搬去另外一个行星

This week,our topic is pollution. What are the answers to all of our pollution problems? We asked two experts to give their views.

Forest Smith is a member of Green First,an environmental group.

Our future on the Earth looks very bad. We are dumping waste on our land. We can’t breathe the fresh air. The sea is polluted too.

I visited some relatives recently in a small village. They grow their own food and cycle everywhere. They are not wealthy,but they are happy and healthy.

We must close the factories producing useless products. That will reduce rubbish and air pollution. We must recycle more,give up all cars and improve public transport.

A big problem is overpopulation in big cities. We must give up big cities and factories and go back to a simple way of life.

John Green is a scientist at a university.

Things are not as bad as Forest says. We’ll have a bright future. We don't need to give up cars but we need to invent better,cleaner engines.

This won’t stop the problem of traffic jams. So we need better public transport. We should also recycle more.

But some things are getting better. My sister returned last month after living abroad for five years. She said ,“Our old neighbourhood doesn’t look the same as before —it is cleaner and greener now.⁹⁹

In a word,science has brought many improvements to our life.

根据短文内容，完成下面的表格。

六、书面表达九年级三班的同学举办了一次主题为“Mars or Earth”的英语班会，下面是班会上所给的材料。假如给 你机会选择，你会选择居住在地球上还是火星上呢？请作出自己的选择并简要说明理由。

5. 大多数人更喜欢观看令人兴奋的低重力篮球比赛。

Most people prefer to basketball games.

4. 网络游戏是一种非常受欢迎的娱乐形式。

A veryentertainment is online games.