Commodity prices have continued to 【tumble】 from the peak they reached in the second quarter.
A、raise
B、run
C、leap
D、fall
【正确答案】：D
【名师解析】:题目中的关键信息是"Commodity prices have continued to"和"from the peak they reached in the second quarter"，这表明商品价格从第二季度达到的高点开始持续变化。四个选项中，"raise"意味着提升，"run"通常指跑步或运行，与价格变化无关，"leap"意味着跳跃或飞跃，而"fall"意味着下降或跌落，与题目中"tumble"（暴跌）的含义一致，都表示价格的下降。因此，正确答案是D，即"fall"。
