单项选择题

A．The invention of machine that can save labor and the progress of scientific agriculture.
B．The invention of crude equipments and agricultural implements.
C．The advance of agriculture machinery and the iron plow.
D．The idea of a cast-iron plow and steel plow.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Men are cleverer than women.B．It is the women’s invention that has changed history.C．Life was difficult and dangerous in ancient times.D．Women’s work is at home.
A．Men are cleverer than women.
B．It is the women’s invention that has changed history.
C．Life was difficult and dangerous in ancient times.
D．Women’s work is at home.
单项选择题
A．Someone paid for the sport they play.B．Hunting wild animals and birds.C．Organized games.D．Something people did in their spare time.
A．Someone paid for the sport they play.
B．Hunting wild animals and birds.
C．Organized games.
D．Something people did in their spare time.
相关试题