According to the passage, the number of young cocaine takers in Spain is ______.

A．young drug takers should accept drug treatment
B．the police give people a blood test when they are charged
C．children who sell drugs be given penalties
D．transportation of drags be punished

A．is practiced all over the Britain
B．involves taking the student's blood to test drug use
C．aims at driving drag-taking students out of the school
D．is arranged with the help of computer