单项选择题

A．2 years
B．10 years
C．20 years
D．5 years
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单项选择题
A．climate change and human activitiesB．the hunting and cullingC．farming and industrializingD．mass killing caused by people
A．climate change and human activities
B．the hunting and culling
C．farming and industrializing
D．mass killing caused by people
单项选择题
A．higher than 1995 to 2000B．lower than 1973 to 1995C．As good as 1995 to 2000D．the same as 1993 to 1995
A．higher than 1995 to 2000
B．lower than 1973 to 1995
C．As good as 1995 to 2000
D．the same as 1993 to 1995
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