听力原文：

G: What a beautiful day to climb the mountain!

B: Climbing mountains is good for our health.

G: Yeah. You move your body, breathe in fresh air and enjoy the beautiful scenery.

B: Not only that; you feel good during your mountain-climbing.

G: I agree with you.

B: Why don’t we take a trip to the mountain in the afternoon?

G: That would be great.

B: Then I will go home and pack my backpack.

G: Okay. See you soon.

Question: How do they feel during their mountain-climbing?

参考答案：

They feel good.