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【单选题】

(Some) methods (to prevent) soil erosion(侵蚀) ) (are) plowing parallel with the slopes of hills, (to plant) trees on unproductive land, and rotating crops.
A．Some

B．to prevent
C．are
D．to plant
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根据网考网移动考试中心的统计，该试题：

0%的考友选择了A选项

8%的考友选择了B选项

8%的考友选择了C选项

84%的考友选择了D选项

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