题目

Harry is eighteen now. He studies in a middle school. His parents like him very much and hope he can become a famous man. So they often tell him to study hard and they do all for him. They call him at six in the morning, after breakfast his father takes him to school in a car and in the afternoon, as soon as the young man comes back, the supper is ready. Of course, he never washes his clothes or goes to buy something in the shops. Once Harry’s father was sent to London on business. He would stay there for half a year. Leaving, he told his wife to take good care of their son. The woman某校名学生参加竞赛，平均分为分，其中及格学生平均分为分，不及格学生平均分为分，则不及格学生的人数为（　　）Ａ．  Ｂ．  Ｃ．  Ｄ．