视频文本如下：

Welcome to English in a Minute.

What would you think if you were talking with an American, and she said: a heart of gold.

Is she rich? Is she famous? Is her heart made of gold? Let's listen to see whether we can find out.

A: Who helped you clean up after the big party the other night?
B: Bob did. And he drove two other guests home.
A: Wow! That was really nice. Bob definitely has a heart of gold.

It sounds like Bob did something very nice. People who have a "heart of gold" are kind and caring.

Gold is very valuable. And if you have a heart of gold, your actions have great value, too. This is a nice way to praise someone.

And that's English in a Minute.