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【判断题】

土壤沙化是由风蚀作用所引起的地面物质中细粒部分及营养物的损失而出现土壤表层的粗化过程

A.
正确
B.
错误
举报
参考答案:
参考解析:
.
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举一反三

【单选题】Imagine eating everything delicious you want - with none of the fat. That would be great, wouldn’t it New "fake fat" products appeared on stone shelves in the United States recently, but not everyone ...

A.
it passes though the intestines without being absorbed
B.
it facilitates the absorption of vitamins by the body
C.
it helps reduce the incidence of heart disease
D.
it prevents excessive intake of vitamins

【多选题】风蚀作用的结果有()

A.
风棱石
B.
新月型沙丘
C.
雅丹地形
D.
石蘑菇