第23题: [单项选择]Dating from around A. A.D. 1000,the largest mound surviving from the Mississippian culturewas one hundred feet high and had a base of nearly fifteen acres. civilization 参考答案:A 答案解析:画线词culture有好多意思。这里指文明、文化。A.civilization同义。正确答案为A。辨义:B.formation构成;C.sect宗派,宗教教派;D.edifice大厦。