什么欺骗了你的眼睛.ppt

count the black dots.
You stare the circle is
motionless, Fbuirtstyocoumweillafinwdartmha-tutphe oth先ers来la一p张s 热身的
in dynamic.
after theห้องสมุดไป่ตู้warm-up , next we will come to a challenging. Let's count how many of the faces in the picture.