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Questions 14—16 are based on the following passage about the drought. You now have 15 seconds to read Questions 14—16. What can contribute to drought

A．over-farming and soil erosion
B．soil moisture
C．water conservation
D．natural disasters

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单项选择题

Questions 14—16 are based on the following passage about the drought. You now have 15 seconds to read Questions 14—16. What can contribute to drought 您的浏览器不支持 audio 元素。