B. 口语交际。
任务一:从方框中选出恰当的选项补全对话,其中有一项是多余的。
A: Hi, Wang Yu. The Spring Festival is coming. I heard Chinese families have many special traditions for it. 1.
B: We have a lot of meaningful customs passed down from our ancestors.
A: That's interesting. Could you please tell me some specific things you usually do with your family?
B: Of course. 2. And we also clean the house carefully on Chinese Minor New Year(小年).
A: Wow, those are all very typical activities. I saw some beautiful paper cuttings on your window last year. They were so nice.
B: Thank you. Paper cutting is an important part of our Spring Festival decoration. 3.
A: That's really warm. Are there any other interesting customs in your family?
B: Yes. 4. My grandparents always give me a big red packet(红包) on New Year's Eve.
A: That's my favorite part! All these customs make the Spring Festival so special. 5.
B: Maybe we can surf the Internet to find out the stories behind them together this weekend.
A: That's a great idea! I'm really looking forward to it.

1.E 2.F 3.A 4.C 5.D

逐空分析如下：
1. 根据下文B的回答“我们有很多从祖先传承下来的有意义的习俗”，可知此处A是询问对方家庭春节保留的传统习俗，对应E选项。
2. 上文A请求对方介绍和家人一同完成的具体春节活动，后文还提到了小年打扫房屋的活动，此处是列举具体的春节相关活动，F选项“我的父母总是让我帮忙贴春联和剪纸”符合语境逻辑。
3. 前文提到剪纸是春节装饰的重要组成部分，此处补充说明剪纸习俗的美好寓意，A选项“这是我们祈求新年平安顺遂、好运连连的传统方式”衔接自然。
4. 根据后文提到祖父母在除夕夜给大红包的内容，此处引出给孩子压岁钱的相关习俗，C选项“我们还有给孩子压岁钱来祈求好运的习俗”符合上下文逻辑。
5. 根据下文B提议周末一起上网查找这些习俗背后的故事，可知此处A表达自己对这些传统起源的好奇，D选项“但我想知道这些传统在几百年前是如何形成的”对应后文的提议。
多余选项为B。