A: Hi, Simon!
B: The mobile phone.
A:
B: Because I can do lots of things with it. Is it also our favorite invention?
A: I like the MP5 Player best.
B: Why?
A:
B: I see. Thee are many inventions in the world. And they have changed our life a lot.
A: I agree with you. I want to invent something useful one day.
B: I hope you can achieve your dream.
