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【单选题】
现在人们闻之色变的沙尘暴，其实古已有之。它本是雕塑大地外貌的自然力之一，是大自然的一项工程，并且在全球生态平衡中占有一席之地。然而，近百年来，沙尘暴却已成为影响人类生产生活的一大灾害。在人为活动的干预下，特别是由于森林大量砍伐．土地过度开垦，工厂盲目建设，排放不加控制，结果造成生态剧变。在受到人为因素的干扰后，自然界的风蚀速度已远远大于土壤的生成速度，一连串的灾害也就由此产生。 对以上文字主旨理解最准确的一项是（ ）。A.
沙尘暴对人类生活的影响有利也有弊
B.
近年来，沙尘暴对人类的破坏越来越严重
C.
犯错的不是大自然而是人类
D.
应该科学看待和合理利用沙尘暴对人类生活的影响
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A.
both, both
B.
either, either
C.
either, both
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D.
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A.
Only if, will
B.
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D.
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