The professor talks about the house while he is showing Sarah around.

W Hello, I’m Sarah Forbes. I’m visiting the Advanced Engineering Centre in Malaysia. You must be Professor Robinson.
M Hello! Welcome to the Solar-Hydrogen Eco-house!
W So this is it...I must say, it’ s a very interesting-looking house.
M Yes, it’ s the house of the future, but when we designed it, we used a traditional Malaysian house design as well as modern technology.
W If you could explain how it works, I’ m sure our listeners will be very interested.
M Sure. (7)This is the first house in the world to run on hydrogen.
W (6)Oh! What’ re those things up there on the roof?
M They’re solar panels. When the sunlight hits them, the sun’ s energy is converted into electricity.
W Wonderful. And what happens if it rains?
M (8)We collect the rainwater. It runs down that pipe into a big water tank in the garden. Then we use the electricity we make from the sun to convert the water into hydrogen and oxygen.
W Brilliant! You can make oxygen as well?
M Yes, but it’ s the hydrogen that we want. We keep it in a tank outside the house.
W Why? Is it dangerous?
M (9)No, actually it’ s quite safe. Come and see the hydrogen gas tank. If you come this way, OK, ah...here it is. And that’s the gas pipe that takes the hydrogen into the house.
W What do you use the hydrogen for?
M (10)To power everything in the house—the cooking stove, the hot water.
W That’ s pretty good.