【正确答案】 A

【答案解析】[解析] 画线词accumulate为动词，意为“积累”。A项amass意为“积累”；例：The capitalists amass great wealth by exploiting workers. 资本家通过剥削工人而积累了财富。B项put up意为“举起；建造”；例：He was putting up a new fence at his home. 他正在为自己家搭建新的篱笆墙。C项make up意为“编造”；例：She made up a funny story to explain her absence. 她编造了一个滑稽的故事来解释她的缺席。D项clear up意为“澄清”；例：I'd like to clear up two or three points. 我有两三点想澄清一下。故选A。