【单选题】Groundwater, a resource that exists everywhere beneath the Earth's surface, is under increasing risk from contamination and overuse.
A．popularization
B．contraction
C．pollution
D．industrialization
【单选题】Groundwater, a resource that exists everywhere beneath the Earth's surface, is under increasing risk from contamination and overuse.
A．popularization
B．contraction
C．pollution
D．industrialization
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