阅读下面短文，根据内容，判断下列句子的正误。

Mike: Those shoes in the window are nice! Let's have a look.

Wu Binbin: What size are your shoes, Mike?

Mike: Size 7.

Wu Binbin: Size 7? That's so small.

Mike: In China I wear size 40 shoes.

Wu Binbin: Oh! Your feet are bigger than mine. My shoes are size 37.

Mike: Really? You look taller than me.

Wu Binbin: But I think you are heavier. How heavy are you?

Mike: I'm 48 kilograms.

Wu Binbin: Yes, you're heavier. I'm 46 kilograms.