There are five on the floor.A. pieces of papersB. pieces of newspapersC. piece of papersD

问题补充：

There are five on the floor.

A. pieces of papers

B. pieces of newspapers

C. piece of papers

D. newspapers

答案：

A. pieces of papers

B. pieces of newspapers

C. piece of papers

(答案→)D. newspapers

解析：paper作“纸”讲时，为不可数名词。一张纸a piece of paper，两张纸two pieces of paper。Paper作主语，谓语动词用单数；但当paper被piece修饰时，谓语动词与piece的形式保持一致。但A中的paper加s是错误的。Newspaper为可数名词，故选D。