单项选择题

Global temperature will climb an average of 3.5 degrees by 2040 and as much as 9 degrees by 2100.

A．地球温度到2040年将会爬到3.5度，到2100年将会爬到9度。
B．全球温度到2040年平均会上升3.5度，到2100年就有9度之多。
C．地球温度到2040年将会爬升平均3.5度，到2100年是9度。
D．全球温度到2040年将平均升高3.5度，到2100年这个数字则变为9度。
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If you walk fast for 30 minutes every day, how many calories will be used for one week
A．100.
B．700.
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Why walking is one of the easiest way to exercise
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C．Because you only need to walk 30 minutes daily.
D．Because it does not need particular place or time.
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