A、15 days. B、17 days. C、19 days. D、21 days. C推理判断题。文章说Amy是在1930年5月5日开始她的行程，在5月24日最终到达目的地。因此一共花去了19天的时间，所以C)为正确答案。

Amy Johnson was a pioneer airwoman in 26, Britain. She was born on July 1st, 1903, in Yorkshire and lived there until 1923 when she went to Sheffield University to study. (30)After graduation from university, she took a job as a secretary to a London lawyer. At the same time she became interested in flying. Soon her bobby became a deter ruination, not simply to make a career in aviation, but to succeed in some project which would prove to the world that women could be as competent as men in a male-dominated field in those days.
      Early in 1930s, she chose her objective: to fly solo to Australia and to break the previous record of 16 days. Her parents and some of her friends lent her money to buy a used airplane. (31)Amy set off on May 5, 1930. Her route took her over Vienna and Baghdad. She was caught in a sandstorm aid had to make mi emergency landing in the desert. Six days later she landed in India. (31)After experiencing: much hardship, she finally reached Australia on May 24, completing a flight of 11000 miles. She was the first woman to fly alone to Australia. In later years, she set several other records in flight history.
      During World War II, Amy joined other professional pilots to serve her country. Her flying duties consisted of transporting aircraft from factories to British air bases. It was during one of those flights ill 1941 that Amy crashed into a river and was drowned, a tragic and early end to the life of Britain’s most famous woman pilot.