阅读理解

Mum: Hi, Amy! This is Mum. I'm in Sydney.

Amy: Really? What's the weather like in Sydney?

Mum: Well. It's cold and cloudy. It's 3 degrees. What about Shanghai?

Amy: It's hot and sunny.

Mum: Well. Your birthday is coming. I bought(买了) a pink skirt and a white shirt for you.

Amy: Thank you, Mum. I like pink best.

Mum: Good. Oh, it's 11:30 a. m. It's time to have lunch.

Amy: 11:30? No, it's 9:30 a. m. in Shanghai.

Mum: Yes. There is 2 hours' time differences(时差).