11. a person qualified to practice medicine, especially one who specializes in diagnosis and medical treatment as distinct from surgery
查看答案
12. a powerful effect that something, especially something new, has on a situation or person
13. an animal that is developing either in its mother’s womb or in an egg, or a plant that is developing in a seed
14. the period in a woman’s life when menstruation ceases
15. to create (an embryo) by fertilizing an egg; to become pregnant