A: Hello, Rob. Let's talk about inventions.
B: OK, Tina.
A: Which is your favorite?
B: My favorite invention is the washing machine.
A: Why?
B:
A: I agree with you. Without washing machines, people will have to wash their dirty clothes by hand. (Tina sees Taylor.)
A: Hi, Taylor.
C: Hi, Tina. I'm heating my lunch in the microwave(微波炉).
A: Did you know the microwave was invented at the end of World War Ⅱ?
C: I didn't know that.
A: Me too. Now we can heat our food quickly.
C: I want to eat my lunch now.
