A、Rowing machines. B、Stationary exercise bikes. C、Treadmills. D、Yoga. D原文中女士说，尽管有些女孩喜欢划船运动练习器、定式健身脚踏车和跑步机，但最受她们欢迎的运动是瑜伽。因此答案为D。

W: Hey, Mark. I never noticed that belly of yours. What have you been up to?
M: It’s all the beer. I hang out with friends a lot lately. I need to start working out again.
W: That reminds me. I should have hit the gym today.
M: Where do you work out?
W: At Bally’s. It’s pretty close to home so it is convenient.
M: How much are you paying?
W: I only pay 20 dollars a month after I become a member of it. The membership costs me 200 dollars per year.
M: That’s pretty good. I think I should join too.
W: If you join, we could work out together. It’s so much better working out with another person. It’s hard to motivate yourself when you are alone.
M: How is the facility there?
W: It is fantastic the inside facilities are the usual stuff but since it was opened last year, it even includes a health-shop, a snack bar, a member lounge and two cafes.
M: Sounds perfect! What do you usually do in the gym?
W: I usually spend about 20 minutes on the treadmill, and then lift weights for about an hour.
M: Do you go every day?
W: No. I try to go 4 times a week, but lately, I’ve been only going about 2 times a week. That’s why I need you there. You should join.
M: There are so many girls working out in a gym nowadays. What do they usually do?
W: Though some prefer rowing machines, stationary exercise bikes, and treadmills, the truth is that the most popular exercise for them is yoga.
M: To be frank, I like yoga. So I’m signing up tomorrow.
W: So you’re really going to join?
M: Yeah. Let’s go in tomorrow and I’ll sign up. We can work out together.
Questions 1 to 4 are based on the conversation you have just heard.
1. Why does the man get fat these days?
2. Why does the woman want the man to join her gym?
3. What does the woman say about the gym she joins?
4. What is the hottest exercise for the girls in a gym?