对生物进化问题的研究，最直接有力的证据是（　　）

名句填写：
①神龟虽寿，犹有竟时，___                ，___                   。（曹操《龟虽寿》）．
②绿树村边合，                               。（孟浩然《过故人庄》）
③时光交替，匆匆不待，旧年尚未逝去，江上已呈春意，正如《次北固山下》所写的：                        ，___                    。
④《钱塘湖春行》着眼花草等植物，着意表达诗人主观感受的诗句是：                                   ，__                   _       。
⑤《观沧海》中表现作者博大胸襟的诗句是：                               ，___                            ；                                   ，___                             。                 
⑥孔子提出的学习兴趣是最好的老师的句子是：                                        ，___                                。
⑦                                   ，吹面不寒杨柳风。

    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