如下表所示，X={butter,cheese}，Y={beer}，则置信度confidence(X→Y)=（ ）。交易号（TID）商品（Items）1beer, diaper, nuts2beer, biscuit, diaper3bread, butter, cheese4beer, cheese, diaper, nuts5beer, butter, cheese, nuts? 2/5|1/3|1/4|1/2

中国大学MOOC: 如下表所示，使用FP-Growth计算其频繁集，给定最小支持度为40%，频繁模式树（FP树）有（ ）个结点。（不包括根结点）。交易号（TID）商品（Items）1beer, diaper, nuts2beer, biscuit, diaper3bread, butter, cheese4beer, cheese, diaper, nuts5beer, butter, cheese, nuts

5.1.2 According to the texture of bread itself, bread can be divided into four categories ( ). A: Soft bread B: Hard bread C: Crispy bread D: Loose bread

Bread is taken with a fork and laid on the bread plate.

Please give him ___. A: some breads B: some bread C: a bread D: many bread

You have to bring bread in a Breaking Bread activity.

It’s your “bread and butter.” "bread and butter" means__________.

The boy have got _____ already. A: two bread B: two breads C: two pieces of bread D: two piece of bread

There____much_____ on the table. A: is, bread B: is, breads C: are, bread D: are, breads

2. What happens when you get to the bread section?You smell the bread and think it is ___3__ than yesterday's bread at home.