石油农业
参考答案：以消耗大量化石能源为特征的现代农业阶段。
He is such a lazy man _______ nobody wants to work with ______. [ ]
A. that; /
B. as; him
C. whom; him
D. as; /
数控、仿形磨削成形面有哪几种形式？各有何特点？
