西部牧业灾害具有更大的风险和更重的灾情是因为西部地区 ①草原

西部牧业灾害具有更大的风险和更重的灾情是因为西部地区

①草原面积广阔,经济落后 ②经营粗放,靠天养畜 ③自然灾害种类多样④农业受灾体脆弱

A.①②     B.②③    C.③④    D.②④

答案

A

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