单选题 The local people were joyfully surprised to find the prices of vegetables no longer ______ according to the weather.
A. evaluated B. converted C. fluctuated D. modified

【正确答案】 C
【答案解析】该题测试考生对难词词义的掌握情况，从某种意义上讲，也测试了词汇量。只有 fluctuate意为“波动”；evaluate意为“评估”：convert：意为“转换”；modify意为“修改”。convert有“转变，转换”的意思，但一般不与price一起用。