Until recently historians assumed that calendars ________ with the advent of agricultureA.came to existenceB.came to existingC.came to existD.were existential
网友回答
C解析考查短语。直到最近,历史学家们认为日历随着农业的出现而存在。e to exist短中to是不定式符号,后面接动词,故选项AB说法有误。选项D描述的是过去的一种状态,选项C描述的是一个动态过程。结合语境可知选C为最佳