A、Because a famous politician supported her. B、Because he thought her idea was interesting. C、Because he took proud in training

In early days no medical college took a woman student. Elizabeth Blackwell, however, was determined to become a doctor. The young American wrote again and again to a number of colleges, asking if she could be enrolled, but each time the answer was NO.
    Then one day, to her surprise, she got a letter from the dean of a college in Geneva, which said YES.
    At first Geneva College, like the other colleges, was not willing to enroll Liza. But later the important people of that college learned that Liza’s application had the support of a famous doctor, and they were afraid to offend that man.
    So the dean decided to play a trick by turning the matter over to the students’ general meeting of the college, thinking that the students would be the last to agree to take Liza. When the student body met, most students took no interest in the matter. Of the rest, some considered the young American’s idea interesting and some thought by having Liza they could be proud of their college training the world’s first woman doctor. Very soon the students all agreed to accept Elizabeth.
    The dean of Geneva College was of course very sorry to learn this, but seeing that he could do nothing to keep Elizabeth out, he gave in.
Questions 18 to 20 are based on the passage you have just heard.
18. Which college at last enrolled Elizabeth?
19. Which of the following is quite beyond the dean’s expectation?
20. What is the reason that the dean accepted Elizabeth?