A little knowledge is because it can cause people to think they are more expert than the

问题补充：

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

答案：

A. expensive

B. ordinary

C. precious

(答案→)D. dangerous

解析：可联系答.案.网客服索取。