听第一段对话，回答第1～3题。
1.Why do parents of boys want to send their children to mixed schools?
A、Because their boys will be more self-confident.
B、Because their boys will not worry about their appearance.
C、Because girls will affect boys positively.
2.Parents of girls do not want to send their daughters to mixed schools，because at mixed schools
A、Their daughters will be too self-confident.
B、Their daughters will be a positive influence on boys.
C、Their daughters will be more worried about their appearance.
3.According to the conversation，which of the following statements is true?
A、There are still many single-sex schools inEngland today.
B、Generally, at mixed schools, boys do better than girls.
C、Single-sex schools are referred to girls’ schools.