—But they have all gone because people built a railway here.

A: Welcome, Mr. Lu.

B: Thank you, Rob.

A: You study oceans.

B: There are many kinds of fish. But fishermen have caught too many of them.

A: Do you mean they are overfishing?

B: Yes. 

A: That sounds a good idea. Look at this article! Garbage (垃圾) in the ocean is also a big problem.

B: Yes. I read about the Great Pacific Garbage Patch. Garbage collects (聚集) there because of the way the water moves.

A: Yes. It is like an island of floating (漂浮的) rubbish.

B: No. It's more like a soup. But it is full of plastic and chemicals (化学品) .

A: That sounds terrible!

B: We can! We can use less plastic and recycle more.

A: Yes!

    GreenHome campaigners (发起者) really love the nature world. In fact, we love it so much that we're determined (决心) to do our best to protect it.For that, we need money, too. GreenHome can be strong only with the support from people like you.

    If the joy of walking through the green forest, the excitement of climbing ancient rocks, or even the simple pleasure of watching wildlife in its own habitat (栖息地) really moves you, then share GreenHome's idea with the world. Please turn that idea into some support today.

    So take action right now! Even a very small amount, like $ 1 a month, will soon build up into a valuable contribution (贡献) to protecting the nature world we love so much.We'll also use it to develop ways to deal with environmental problems.

    Think about it in another way. If you want a future where you can continue to do the things you love in the great outdoors, you need to make sure you've got a great outdoors to do them in.And this way is simple enough—that's got to be worth $1 a month.

要求：1）词数：80~100；

2）字迹工整，语言流畅，表达准确，逻辑清楚；

3）要有复合句表达。

—Sorry, I _________it. I'll give it to you in ten minutes.

    The world uses about a thousand million (百万) tons of water a day. Water is a human right and everyone should have his share. Yet more than 700 million people around the world have trouble getting clean, safe water.

    Treating wastewater is a good way to provide fresh water for us. And it also helps the environment by keeping waste out of rivers and oceans. 80% of wastewater around the world is not treated at all, and it is running into oceans. But now we have got the technology to treat and reuse the wastewater.

    While 75% of our planet is covered with water, only 2%is fresh water—that comes from rivers, lakes, ice and snow. The rest, 98% of the water, is in seas and oceans. It is too salty to drink. Then desalination businesses come in. More than 19, 000 factories have been built around the world, mostly in coastal countries. They process (加工) more than 92 million tons of water every day. But the technology they use requires a lot of energy.

    Scientists are working to create a less costly technology. They want to produce 20 times more clean water and make sure everyone has enough. But for now, the world still faces each day with not having enough water for everyone.