A:精耕细作的生产模式
B:男耕女织的经营方式
C:生产工具的不断改进
D:农业技术的变革创新
要使代数式x-2有意义,则x的取值范围是( )
-- I had a quarrel with my friend Jim yesterday,and now I _______ it.
-- Why not go and say sorry to him at once?It's never too late to mend.
图幅相同的九台区地图和吉林省地图相比( )