单项选择题
A．always went to school together B．could have lessons on the radios C．listened to teachers at school D．built radio schools with teachers
A．the box of bricks was heavier than him B．the box of bricks was lighter than him C．the box of bricks came down too fast D．the man was too careless
A．Levels of education are closely related to productivity. B．Women are not as productive as men. C．Women receive less education than men. D．Goods produced by men are not as good as those by women.