A．Everyone will benefit from education sooner or later．
B．A good education contributes to the prosperity of a nation．
C．A good education is necessary for one to climb the social ladder．
D．Everyone has a right to an education appropriate to his potential．
A．He likes students with high motivation．
B．He enjoys teaching intelligent students．
C．He tailors his teaching to students' needs．
D．He treats all his students in a fair manner．
A．It is mostly imported from the Middle East．
B．It is a sure indicator of its economic activity．
C．It has a direct impact on the international oil market．
D．It equals more than 30 million barrels of oil each day．