【正确答案】 C

【答案解析】[听力原文]
More unusually cold temperatures are expected for tonight and tomorrow through the deep South. Hard freezes are expected over much of Florida, and despite the growers" best efforts, much ofthe citrus crop will probably be lost. This cold wave, along with last month"s flooding in southern California, means citrus fruits are going to be in short supply. That means more imports and, of course, higher prices in the grocery store. Experts predict that prices for oranges may climb to their highest level in five years. Consumers should start seeing these higher prices in about two to three months. So stock up on that frozen orange juice while you can still afford it.

[考点] unusually cold temperature异常的寒冷气温
[解析] 问题是“这篇讲话的主要目的是什么”，因此应该去听第一句话，由文章第三、四句话“这股寒流，再加上上个月南加利福尼亚的洪水意味着柑橘将会面临短缺，也就是说柑橘进口会增加，商店里柑橘价格会上升”可知，讲话的目的是告诉大家柑橘短缺的原因，因此答案选C。

【正确答案】 C

【答案解析】[考点] climb to the highest level攀升到最高点
[解析] 问题是“什么时候价格会发生改变”，因此应该去听关键词“价格”，由文章第五、六句话“专家预测柑橘的价格将会在5年内攀升到最高点，顾客会在2到3个月内见到价格的升高”可知，2到3个月之内价格会发生改变，因此答案选C。

【正确答案】 D

【答案解析】[考点] stock up储存
[解析] 问题是“说话者建议什么”，因此应该去听关键词“建议”，根据文章最后一句话“所以趁着现在能买得起，赶快储存一些冷冻果汁吧”可知，说话人建议大家买低价果汁，因此答案选D。