题目

It rained for two weeks, completely ________ our holiday.        A. ruined                      B. ruin                      C. to ruin                         D. ruining 答案：D 解析: 略11．某几何体的三视图如图所示，则该几何体的表面积为（　　）A．20+2πB．20+6πC．14+2πD．16