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20 10 Chongqing qijiang county senior high school entrance examination mathematics multiple-choice questions 10 (with questions)
Solution: ∫△ABE and △ △ADF are equilateral triangles.

∴FD=AD,BE=AB

AD = BC,AB=DC

∴FD=BC,BE=DC

∠∠B =∠D,∠FDA=∠ABE

∴∠CDF=∠EBC

∴△CDF≌△EBC, so ① is correct;

AF = FD,AE=DC,EF=CF

∴△EAF≌△CDF

∴∠CDF=∠EAF, so ② is correct;

∠AFC=∠AFE+∠EFD+∠DFC,∠AFE+∠EFD=60

∴∠AFC-∠DFC=60

∴∠AFE=∠DFC

∴∠EFC=60

Similarly, ∠ FEC = 60

CF = CE

∴△ECF is an equilateral triangle, so ③ is correct;

In the equilateral triangle ABE,

The bisector of the top angle, the midline of the bottom, the height and the perpendicular bisector of an equilateral triangle are the same line segment.

∴G is not the midpoint of AE, and CG⊥AE cannot be verified, so ④ is wrong.

So choose B.