本期内容：

Canada is warming up faster than the rest of the world, according to a report commissioned by the Canadian Environment and Climate Change Department. The report — titled "Canada's Changing Climate Report" — says, on average, Canada's climate has been and will continue to warm at double the rate of global warming. The report also says since 1948, when records became available, Canada's average land temperature increased by 1.7 degrees Celsius.

warm up: 温度上升；热身
commission: vt. 委托……
title: vt. 以……为标题 n. 题目
rate: n. 速率
Celsius: n. 摄氏度

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