下列说法符合地中海膳食结构特点的是（）

A.食物加工程度高

B.主要食用油为动物油

C.膳食含大量复合碳水化合物

D.蔬菜水果摄入量低

E.多数成人有饮白酒习惯

A little knowledge is _______, because it can cause people to think they are more expert than they really are.

A．expensive

B．ordinary

C．precious

D．dangerous