Lucy ___ China is my friend. [ ]
A. is from
B. from
C. does from
D. comes from
答案:B
钢的含碳量是( )
A.2%-4.3%
B.3%-4.3%
C.0.03%-2%
D.0.5%-2%
十三五规划建议提出,要创新和完善宏观调控方式,采取相机调控、精准调控措施,适时预调微调,更加注重()。
A.扩大就业、稳定物价
B.调整结构、提高效益
C.防控风险
D.保护环境