30.【2020 •内蒙古包头市】Earth Day ______ in 1970 for the first time, and the Day now includes events in mor

30.【2020 •内蒙古包头市】Earth Day ______ in 1970 for the first time, and the Day now includes events in more than 190 countries and regions (地区).
A.celebrated B.was celebrated C.is celebrated D.has been celebrated
答案】B
解析】句意:地球日在1970年第一次被庆祝,现在这一天包括了190多个国家和地区的活动。考查一般过去时的被动语态。celebrated一般过去时,庆祝;was celebrated一般过去时,被庆祝;is celebrated一般现在时,被庆祝;has been celebrated现在完成时,被庆祝。根据句中“in 1970”可知,句中时态为一般过去时,而且主语Earth Day与动词celebrate之间是被动关系,所以此处使用一般过去时的被动语态was celebrated。故选B。
 
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