Schools and parents in Shenzhen City have been asked to take better care of children's eyesight as 45 percent of them were found to be shortsighted. Too much reading, poor lighting and too much TV are blamed . Of the city's high school graduates  who applied to study at colleges this summer, but now he gets up earlier. The purpose  of this passage is to  _  .
criticize  children who are shortsighted. blame parents and schools for children's being shortsighted. ask the high school graduates to pay attention to their eyesight. draw people's special attention to eye hygiene .