如图1，在矩形ABCD中，动点P从点B出发，沿矩形的边由$B\to C\to D\to A$运动，设点P运动的路程为x，$△ABP$的面积为y，把y看作x的函数，函数的图像如图2所示，则$△ABC$的面积为（    ）

I=0

P=0

DO WHILE P<10

  P=P+I

  I=I+2

LOOP

PRINT P

    There is a National Health Service in Britain. People usually call it "the NHS". When people are ill, they can get free treatment（治疗）. ① The government pays for the treatment. In Britain everyone has a local doctor. The local doctor is a general practitioner (全科医生)(GP). A GP is a doctor who treats patients with all kinds of illness. He may not have specialists (专家) usually work in hospitals.

    If a man is ill and wants to see his doctor, he calls to make an appointment first. If he is too ill and he can't go out, his doctor will come to his house. If the patient has to take medicine, the doctor gives him a prescription(处方). ② The patient has to pay some money for the prescription. He goes to the chemist's shop and buys the medicine there. The price is the same as any kind of medicine. ③But children, students, old people or people without work don't have to pay for their medicine