2001 AMC 8 第 5 题
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所有题目均经美国数学协会（MAA）官方合法授权使用。
5.
在一个漆黑的暴风雨夜，史努比突然看见一道闪电。十秒后他听到雷声。声速是每秒 英尺，一英里是 英尺。估计史努比距离闪电有多远，精确到最近的半英里。
On a dark and stormy night Snoopy suddenly saw a flash of lightning. Ten seconds later he heard the sound of thunder. The speed of sound is feet per second and one mile is feet. Estimate, to the nearest half-mile, how far Snoopy was from the flash of lightning.
小提示：
使用距离等于速度乘以时间
Use distance equals rate times time
大提示：
将这个距离与 英里比较
Compare the distance with miles
解答：
在 秒内，雷声传播了 英尺。
英里约为 英尺，接近上面的距离。
所以正确答案是 C。
In seconds, the thunder was able to travel feet.
Note that miles is about feet, which is close to what we found above.
Thus, C is the correct answer.
其他年份的第 5 题
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