dialogue: W: Hey, you. Can't you be a bit faster? You make the whole group wait for you. M: How can you blame it on me? I'm having trouble in operating this kind of machine. It is designed for you right handers. W: You always complain about these machines. But you are not the only one using your left hand. M: Really? I don't know any others who are the same as me. W: To tell you the truth, I'm also left-handed. M: You? W: Yeah. You should spend some time getting suited to it in advance. Then you can do it quickly. M: Is that what you have done? W: Yes. In fact, it pays to use both hands. M: OK, I will try.
question: What are the two speakers talking about?
choice: Using the left hand. Operating machines. Designing machines.
answer: Operating machines.