单选题 Around the Spring Festival, a prevailing practice is to exchange greetings and visits.
A. prevalent B. populous C. preceding D. present

【正确答案】 A
【答案解析】prevailing:占上风的,十分流行的;prevalent:流行的,主要的;populous:人口多的;preceding:上一个,前面的;present:当前的,现在的