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. Generally speaking, high school students have  _   eyesight than primary school students.
poorer better brighter good