阅读下面材料，并完成材料后的问题。
    Pre-reading
    Step 1 Brainstorm
    T: What do you drink and what do you eat?
    学生小组讨论自己的饮食习惯，呈现食品和饮料名词。
    Step 2 What food and drink do you think are healthy?
    学生讨论列举出他们认为健康的食品和饮料。
    While-reading
    (1)Read the text and decide which of the following are healthy and which are not healthy.
    (2)Read again and decide whose diet is healthy.
    Jack's diet:
    Meat, pizza, vegetable, orange juice
    Mike's diet:
    Fish, hamburgers, coke, meat
    Jane's diet:
    Noodles, fruit, ice cream, candy
    Then tell them what to eat and drink.
    Post-reading
    Interview and find the health star in your class.
    (1)Interview at least five of your classmates using the following questions.
    Do you eat meat / fish / noddles / rice / fruit / candy?
    Do you drink juice / milk / coke / water?
    (2)Discuss within groups who is the health star.
    问题：

问答题   材料中所呈现的属于哪种阅读教学模式?对此阅读模式进行阐述。

问答题   针对读前阅读中的头脑风暴，谈谈你的理解。