A、He read about it in the newspapers. B、He heard about it from the woman. C、He knew it on the radio. D、He knew it on TV. C对话开始，男

W: Have you read today’s paper?
M: Not yet. But I can guess what you’re going to talk about. Is it the gas leak event?
W: You must have watched the local news on TV, huh?
M: No. I have heard about that from the radio.
W: It’s a pity that it claimed two lives!
M: Yes, gas leak is indeed the most dangerous situation in our daily life, I think.
W: You are quite right. But what can you do if it happens to you?
M: Well, I can’t remember where I’ve seen a report, which says if there is a strong smell of gas in the house, go to the kitchen at once and check the stove and the gas hose.
W: What if you hear a hissing sound?
M: If so, turn off the stove and open all the windows immediately.
W: Shall I call the gas station for help?
M: Oh, no. Remember that never make a phone call or touch any electric switch in the house, because even a spark might cause an explosion, which is the most dangerous situation.
W: Then I just sit there doing nothing?
M: You just open all the windows, and take your family members out of the house and inform the gas station.
W: OK. I see that. Thank you for telling me so much about this.
M: My pleasure.
8. How did the man know about the gas leak event?
9. What should we do when hearing a hissing sound?
10. Why does the man advise not to make calls when there is a gas leak at home?
11. What should we do when gas leaks according to the conversation?