Unit 7 A Day to Remember

Section A, 2a and 2d

Helen: Hi, Fu Xing. How was your school trip to the wastewater plant? Was it boring?

Fu Xing: No, it wasn’t at all. It was really interesting!

Helen: Wow! What did you see?

Fu Xing: We saw the plant make dirty water clean again.

Helen: Really? How?

Eu Xing: Well, first, dirty water from our homes goes into the plant. Then, special screens remove large pieces of waste from the water.

Helen: What happens next?

Fu Xing: Well, large machines remove germs and other things from the water. These things are usually too small to see. It takes a few more steps after that before the water becomes clean again.

Helen: Wow! I used to think it was easy to get clean water.

Fu Xing: Me too! I didn’t realize it was so hard.