下列哪种方法可以对土进行简易鉴别？
A、目测估计
B、手捻
C、搓条
D、摇震
参考答案：A, B, C, D
Don't ____ too late, or you will feel tired in class tomorrow.[ ]
A. wake up
B. get up
C. stand up
D. stay up
悬釐
