問題詳情
50.若小真花了 25 分鐘跑完，則他的平均速率約為多少 m/min？
(A)0
(B)2
(C)4
(D)31.4。
(A)0
(B)2
(C)4
(D)31.4。
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
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