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Tony will be late for class. The bell will ring in 3 minutes. 托尼上课要迟到了，现在还差3分钟，铃声就要响了。
Tony thinks it will take him 30 seconds to climb one step of stairs, and his classroom is on the 7th floor. Since he can never arrive at the classroom on time, he will walk slowly. 托尼想自己爬一层楼需要30秒，而班级在7楼，托尼想着会迟到，就打算慢悠悠的走。
Do you agree with Tony? 你同意托尼的想法吗？
托尼不会迟到。因为从一楼到二楼，从二楼到三楼，以此类推，到七楼，他只需要爬6层楼梯。爬一层楼梯需要30秒，6层需要180秒，正好三分钟。
不要把问题想得太简单，稍不小心就会犯错误。
Tony thinks it will take him 30 seconds to climb one step of stairs, and his classroom is on the 7th floor. Since he can never arrive at the classroom on time, he will walk slowly. 托尼想自己爬一层楼需要30秒，而班级在7楼，托尼想着会迟到，就打算慢悠悠的走。
Do you agree with Tony? 你同意托尼的想法吗？
托尼不会迟到。因为从一楼到二楼，从二楼到三楼，以此类推，到七楼，他只需要爬6层楼梯。爬一层楼梯需要30秒，6层需要180秒，正好三分钟。
不要把问题想得太简单，稍不小心就会犯错误。