单项选择题
A．had never met this baby B．had spent a long time studying the baby' s illness C．visited the baby both in Deleville and London D．gave the nurse some advice on, the telephone
A．a dead writer B．the water in Deleville C．a dangerous murderer D．a harmful substance (物质) used to kill pests
A．her parents were living in London then B．the hospitals in Deleville were full at that time C．she was the daughter of a famous doctor in London D．doctors in Deleville were not sure about the cause of her illness