题目

— Do you think yesterday’s math problems were difficult?         — Yes. I could ________ work them out.        A. hardly             B. easily        C. finally      D. nearly  答案：A莆田市为迎接省运会，正在进行城区人行道路翻新，准备选用同一种正多边形地砖铺设地面．下列正多边形的地砖中，不能进行平面镶嵌的是（ ）A．B．C．D．