题目

There once was a little boy who wanted to meet the king. He set off, walking towards the king’s castle. After many years of walking, the king’s castle came into his view. However, as the boy drew closer to the outside of the castle, the guards noticed him. “Get out of here!” ordered the guards. Well, the little boy didn’t have to be told twice. He turned…and ran. All he wanted to do was to tell the king wonderful things, and see all the beautiful things in the king’s house. But he couldn’t even get near the castle! The boy finally stopped running, sat down and cried. A （教材变式题）下面几种图形：①三角形；②长方形；③正方体；④圆；⑤圆锥；⑥圆柱．其中属于立体图形的是A.③⑤⑥B.①②③C.③⑥D.④⑤