剪纸是我国传统的民间艺术．下列剪纸作品既不是中心对称图形，也不是轴对称图形的是（   ）

句型转换
(1)Betty did very well in her English exam . (改为否定句)
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(2)It's ten minutes' walk from my home to school.(划线部分提问).
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(3)Where does Jim study? I want to know. （合并为一句含有宾语从句的句子）
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(4)You have to eat little meat, ____ ？ （写出反义疑问句）
(5)They clean their classroom after school every day . （改为被动语态）
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