单项选择题

Questions 15 to 17 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. What is true of American education

A.It included everyone from the beginning.
B.High schools are not free to all the children.
C.All children have rights to receive education.
D.There are no entrance exams for all levels of education.