题干
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Every April as a tradition, as many as 30,000 runners ________ the street of London for the grand London Marathon.
Every April as a tradition, as many as 30,000 runners ________ the street of London for the grand London Marathon.
A：reach
B：flood
C：rush
D：arrive
答案(点此获取答案解析）
B
的两根是一个矩形两邻边的长．