A、She was absent-minded. B、She broke her ankle. C、The ice was slippery. D、The ice cracked. D由原文可知，当女士走在薄薄的冰面上的时候，冰面一下子就裂开了，然后她就掉

W: My gosh, Patrick. Where are we?
M: Jessica, I’m taking you mountain climbing.
W: Mountain climbing? This is scary!
M: Don’t worry. I’m an expert mountain climber. I am as steady on these steep slopes as a mountain goat.
W: You just smell like a mountain goat.
M: Stop complaining. We’re about to reach the crux (核心，中心) of the climb.
W: What is the crux of the climb?
M: Actually, the crux of something is the most difficult or important part.
W: Right, Patrick. I’m coming.
M: Oh, my gosh! You fell off the side of the cliff (悬崖，峭壁)! Jessica, are you OK?
W: Patrick, please pull me back up. Hurry!
M: Wow, you’re hanging off the side of the cliff! This is going to be a real cliff hanger (悬念). Do you know what that means?
W: Patrick, it’s not time for English teaching! Help me!
M: One second. A cliff hanger is when a chapter of a movie or book ends without a resolution.
W: Patrick, hurry! Help!
M: Don’t worry, Jessica! Please hold on!
W: Oh, it’s dangerous just now. I almost fell off!
M: Yeah, Jessica, that was a close call! You almost fell off the side of a cliff. It’s a good thing for you that I was able to pull you back to safety.
W: Thanks a lot. You saved my life. And it’s a good thing for you too!
M: I saved you because I was afraid if you were going to fall, you were planning to take me with you.
W: That’s it. Well, thanks all the same.
M: Well, that’s what friends are for, right? What happened? Did you slip on the ice?
W: Yeah, when I was walking on thin ice, the ice suddenly cracked (破裂，裂开), and then I  fell down.
M: Walking on thin ice? You know, that’s an English expression.
W: Patrick, this is not a good time to teach English.
M: Why not?
W: Because you’re very close to the edge of the cliff.
M: Just hear me out. When you say someone is walking on thin ice, it means that he is in a risky situation.
W: Oh, Patrick! As you have taught me so many expressions, I’ll teach you one—out of left field.
M: Right, that phrase comes from baseball, and means that something came as a complete surprise.
W: Bingo. I’ll give you a surprise right now. Let’s say goodbye to each other here.
M: Well, Jessica, we are going to say goodbye here?
W: Yes.
M: Where are you going?
W: Travel the world.
M: Can I come with you?
W: I don’t need an English teacher to be with me.
1. How does the woman feel about mountain climbing?
2. What happened to the woman?
3. How does the man explain why he saved the woman?
4. Why did the woman fall down when she was walking on the ice?
5. What does the woman mean at the end of the conversation?