题目内容:
Thephrase"first-come,first-served"tellsyouthat__________.
A.peoplecanbuytheticketsonthefirstdayonly B.thepersonwhoisfirsttoarrivewillreceiveaticketatnocharge
C.foodanddrinkwillbeservedattheauction
D.ticketsaresoldintheorderofwhoarrivesfirsttobuythem
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答案解析: