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.