题目

如图，正方形ABCD的对角线BD长为2，若直线l满足：（1）点D到直线l的距离为，（2）A、C两点到直线l的距离相等，则符合题意的直线l的条数为……【    】 A.1         B.2         C.3         D.4   答案：B—I do feel a little about making a speech.—Take it easy. The more you prepare, the better you will feelA. angry B. disappointed C. nervous D. bored