A、The safety of weight-lifting. B、The high membership fee. C、The renewal of his membership. D、The operation of fitness equipment

W: Hi, David. （12）There’s a new gym opening in town today. Would you like to go with me this afternoon?
M: Yes, more than glad to. I haven’t been to a gym for ages. I need to do some exercise to tone up.
W: Then this is a good chance. They sent me an invitation with a note saying I could take a friend for free on the first day. （13）Also, if we both sign up before Friday, we can get a discount on a 6-month membership.
M: Great. Count me in. I really want to lose some of this belly fat and turn it into muscle. But I’m not sure which of the gym equipment would best help.
W: Well, I’m no expert at that, but I think you can try lifting weights and do at least 200 sit-ups twice a day.
M: （14）I’ve never tried weight-lifting before. Is it dangerous?
W: No, not at all. If you know some of the basics, don’t worry. I’ll show you the ropes. （15）I used to practice this at another gym before my membership ended. I’ll be your personal trainer.
M: Thank you. What other equipment do they have?
W: Well, like all gyms, they have all sorts of things to help build up muscles and different parts of the body, like upright bicycles, chest stretching machines and running machines. You could use any of this to suit your purpose. Now, the gym opens at noon, so can we meet up in town at 1:30 p.m.?
M: Perfect! See you there, coach.
Questions 12 to 15 are based on the conversation you have just heard.
12. What are the speakers talking about?
13. What does the gym offer at its opening?
14. What is the man concerned about?
15. What do we learn about the woman from the conversation?