单项选择题
A．frequently B．often C．seldom D．consequently
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.
A．the less pollution we have B．the harder pollution can be done away with C．the more pollution there will be D．the more easily pollution can be controlled