前些天,学校组织同学们进行了一次除草劳动,任务是彻底清除操场上的草,要求是把草连根拔起,但要把草根上的土留下来,以保证操场的高度。同学们在劳动时发现,草根很大,草根上的土也较多,怎样把草根与土分离开呢?同学们使用了各种的方法:往地上摔,用脚踩,两把草对撞……在交流拔草经验方法时,军军同 A few days ago, the school organized classmates to conduct a weeding work, the task is to completely clear the playground grass, the requirement is to uproot grass uprooted, but to leave the grass on the soil to ensure the height of the playground. Students found in work, a large grassroots, grassy soil is also more, how to separate the grass roots and soil? Students use a variety of ways: to throw on the ground, with the foot, the two grass hit ... In the exchange of weeding experience, military with