题目

下列说法中错误的是（ ） A . 两条对角线互相平分的四边形是平行四边形 B . 两条对角线相等的四边形是矩形 C . 两条对角线互相垂直的平行四边形是菱形 D . 两条对角线相等的菱形是正方形 答案：B276. Computer technology has _____ a revolution in business practices. Which of the following words is not suitable to be put in the blank? A．startedB．causedC．brought aboutD．Made