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thanks for sharing!!@@
no!!!!!!!!!!
64秒
112 i think
不知道
112 seconds
某人要到10层大楼的第8层办事,不巧停电,电梯停开。如从1层楼梯走到4层需要48秒。
) \6 A2 s. h  R/ J; B+ ?: Xtvb now,tvbnow,bttvb请问以同样的速度往上走到8层,还需要几秒才能到达?
最憎数学的啦
thank you very much
thank you very much
thank you very much
thank you very much
thank you very much
thank you very much
thank you very much
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