听力首页 听力教程 VOA慢速 英语歌曲 外语下载 英语小说 英语词典 在线背单词 听力论坛 韩语学习
听力专题 英语教材 VOA标准 英语动画 英语考试 资源技巧 英语翻译 单词连连看 听力家园 德语学习
听力搜索 英语导读 BBC英语 英语视频 英语电台 英语QQ群 外语歌曲   英语游戏 英语网刊 日语学习
当前位置: 英语听力论坛 » 【六级教室】 » 六级练习2015.03.28
返回列表 发帖

六级练习2015.03.28


       
       



Farmers usually use plows to prepare their fields for planting crops. Plows cut into the ground, and lift up weeds, and other unwanted plants. However, plowing is blamed for causing severe damage to top soil by (1)_______________________________. Many farmers in South Asia are now trying a process called Low Till Farming. (2)____________________. In this method of farming seeds and fertilizer are put into the soil through small cuts made in the surface of the ground. Low Till Agriculture leaves much or all the soil and remains of plants on the ground. (3)____________________________. They take in rain and allow it to flow into the soil instead of running off.




本帖隐藏的内容需要回复才可以浏览

返回列表