In the geography class, the teacher explained wind and water might cause soil ____________.<br>A、 pollution<br>B、 excellence<br>C、 explosion<br>D、 erosion

In the geography class, the teacher explained wind and water might cause soil ____________.
A、 pollution
B、 excellence
C、 explosion
D、 erosion

出自：石家庄铁道大学大学英语II

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