第四章单元测试
- Forest soil has a thin topsoil layer.（ ）
- Grassland soil has a deep layer of subsoil. （ ）
- Black soil and red soil are different soil types.（ ）
- Desert soil has a well developed soil layers. （ ）
- Soil erosion is the wearing away and transportation of soil by wind or water.（ ）
A:对 B:错
答案:对
A:错 B:对
A:错 B:对
A:错 B:对
A:对 B:错
温馨提示支付 ￥3.00 元后可查看付费内容,请先翻页预览!
