题目

Why is the man talking to the woman?A.To take out insurance. B.To describe his illness. C.To make an appointment. 答案：【答案】C【解析】【原文】M: Hello, I think I have the flu. I feel awful. I’d like to see a doctor.W: Could you come in tomorrow afternoon at one o’clock? M: OK, see you tomorrow.W: And remember to take your ID and insurance card with you.如图，已知AD=AE，AB=AC．（1）求证：∠B=∠C；（2）若∠A=50°，问△ADC经过怎样的变换能与△AEB重合？