1993 AMC 8 第 10 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。
10.
这张折线图表示一张交易卡在 年的前 个月的价格。最大的月度价格下降发生在哪个月？
This line graph represents the price of a trading card during the first months of The greatest monthly drop in price occurred during which month?
一月
January
三月
March
四月
April
五月
May
六月
June
答案：B
小提示：
当折线从一个月到下一个月向下时就是下降；比较每次下降的幅度
A drop happens where the line goes down from one month to the next; measure how far it falls each time
大提示：
只比较向下的线段，找最陡的那一段
Compare only the downward segments and find the steepest one
解答：
月度变化为：一月从 ，下降 ；二月从 ，价格上升；三月从 ，下降 ；四月从 ，价格上升；五月从 ，下降 ；六月从 ，下降 。
最大下降是 ，发生在三月。
所以正确答案是 B。
The price changes month to month are: January (drop ), February (rise), March (drop ), April (rise), May (drop ), and June (drop ).
The largest drop is which occurred during March.
Thus, the correct answer is B .
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