The Roman alphabet is a Greek invention, is the marathon, a long distance race created in honour of a Greek soldier.
A. which
B. what
C. that
D. as
网友回答
A. which
B. what
C. that
(答案→)D. as
解析：句意：罗马字母是希腊人的发明，为了纪念一个希腊士兵的长距离赛跑马拉松比赛也一样。Roman alphabet is a Greek invention是主句,as is the marathon… 是as引导的非限制性定语从句，也可以理解成：as /so + be /情态动词/助动词 +主语. ……也是 一样，选D。