(2013·高考湖南卷)You must learn to consult your feelings and your reason________you reach any decision.

A．although

B．before

C．because

D．unless

对公众进行较为具体分类的开创者是美国的（）

A.康非尔德

B.亨特瑞克斯

C.马斯洛

D.霍夫兰