单选题   When Picasso was particularly poor, he might have tried to obliterated the original composition by painting over it on canvases.
 
【正确答案】 B
【答案解析】 划线词obliterate的含义是“抹去,擦去”。选项A为“复制”,选项C为“代替”,选项D为“编纂”,只有B表示“除去,消除”。