题目

At the sight of the policeman,_______ from behind the door. A. did the boy rush out         B .the boy was rushing out C. out rushed the boy            D. rushing out was the boy 答案：C如图，在三角形ABC中D、E是所在边的中点，三角形甲比三角形乙的面积大5平方厘米．那么三角形ABC的面积是______平方厘米．