小题1:B
小题2:D
小题3:C
小题4:B
小题5:A
小题1:细节理解题。结合but in fact by the age of fifteen he had decided to become a doctor rather than a sailor可知答案。
小题2:细节理解题。结合His father was a dentist and as a result, Tim had the opportunity of meeting many doctors either at home or elsewhere可知答案。
小题3:细节理解题。结合After the war, he got married and chose to be a doctor in the countryside可知答案。
小题4:推理判断题。结合working under an old doctor who was popular in the area, but who hated the sight of blood and believed that the secret of medicine was faith可知an old doctor不愿意看见血，那“见血”的事只能由Tim做了。由此判断Tim不怕血。
小题5:主旨大意题。文章讲述了Tim当医生的原因和他在战争中及战后的一些经历。