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A、长方形-v3p4|3q't3W1]6\5h5S8T
B、正方形-v3p4|3q't3W1]6\5h5S8T
C、等边三角形-v3p4|3q't3W1]6\5h5S8T
D、半圆形-v3p4|3q't3W1]6\5h5S8T