It is commonto give children and the seniors some lucky money on the eve of the Spring Fes

问题补充：

It is commonto give children and the seniors some lucky money on the eve of the Spring Festival.

A. practice

B. reality

C. knowledge

D. belief

答案：

(答案→)A. practice

B. reality

C. knowledge

D. belief

解析：考查名词：A．practice做法，B． reality现实，C．knowledge知识，D．belief信念，句意：在除夕夜给孩子和老人压岁钱是惯例。Common practice惯例，选A。