To identify a topic sentence, you should keep three shapes in mind when reading a paragraph.They are（）.（多选）

To identify a topic sentence, you should keep three shapes in mind when reading a paragraph.They are（）.（多选）
A.The Triangle Shape
B.The Diamond Shape
C.The Circle Shape
D.The Up-side Down Triangle Shape
正确答案：The Triangle Shape；The Diamond Shape；The Up-side Down Triangle Shape