Hypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was the only woman scientist to have a place in the history books.
Hypatia's father was director of Alexandria University, and he made  his daughter had the best education available. This was unusual, as most women then had few opportunities to study.
After studying in Athens and Rome, Hypatia returned to Alexandria where she began teaching mathematics. She soon became famous for her knowledge of new ideas.
   We have no copies of her book, but we know that she wrote several important mathmatical book. Hypatia was also interested in technology and invented several scientific tools to help with her work.
   At the time, many rules were afraid of science, and anyone connected with it was in danger.One day in March 415, Hypatia was attacked in the street and killed.

23. D the ( the only +noun : duy nhất )

24. B made 

25.  A where ( mệnh đề quan hệ )

26. D but ( nhưng , dùng hai vế đối lập . Chúng ta ko có bản sao của bà ấy , nhưng chúng ta....)

27. D was ( bị động trong QK : was attacked : bị tấn công ) 

27.