Soil______is a natural process. It becomes a problem when human activity causes it to occur much faster than under natural condi

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问题 Soil______is a natural process. It becomes a problem when human activity causes it to occur much faster than under natural conditions.

选项 A、preservation
B、abrasion
C、erosion
D、eruption

答案C

解析各项的意思是：preservation维护，保护；abrasion磨损处，擦伤处；erosion(水，风等的)侵蚀，腐蚀；eruption爆发，喷发，erupt into laughter突然大笑。

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考博英语

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