题目

如图，在平面直角坐标系中，点A和点C分别在y轴和x轴正半轴上，以OA、OC为边作矩形OABC，双曲线（＞0）交AB于点E,AE︰EB=1︰3.则矩形OABC的面积是           .   答案：24  Usually before exams, the students_____ a few minutes to write down their names and numbers.         A. are given     B. were given      C. give    D. gave