Ⅰ.阅读理解
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体裁：说明文 话题：天气 词数：303 时间：6′
Droughts(干旱) caused by global climate change have led to a drop in wheat production，a worldwide shortage and high food prices around the world.The global wheat supply is at its lowest point in 50 years，with only an estimated 10 weeks of supply left.This has been one factor pushing the prices of bread，beer and other wheat－containing foods steadily higher.According to Hilton Dinner，a bakery owner from Edmonton，Canada，the price of flour has more than doubled over the past eight months.In 19 years of business，Dinner said，he has never seen prices rise like this.
