(2013·河南豫西五校高三质检)—I prefer western food. It's a kind of healthy food.

—________ But western food is said to be high in sugar and fat, such as hamburgers and fries.

A．Is that right?

B．How do you know that?

C．Do you really think so?

D．Who told you that?

认知结构是个体的全部知识（或观念）的内容和组织，直接参与了和新知识的相互作用。