双轮异向切割锯不能切割（）。
A.玻璃
B.石材
C.混凝土
D.钢材
E.陶瓷
参考答案：A, B, C, D
— Look! there _____!
— Oh, yes, there _____! [ ]
A. comes Tom; comes he
B. Tom comes; he comes
C. Tom comes; comes he
D. comes Tom; he comes
啤酒花高产栽培施肥原则：苗期控，蕾花期促，花体膨大期补。
