问题详情

Question 22 is based on the following news. At the end of the news item you will be given 10 seconds to answer the question. Now listen to the news. 
Airlines are being hit with huge increases to ensure their planes after the terrorist attacks in the United States. Goshork Insurance Holdings, which ensures aircraft around the world, said rates had soared as much as 10 fold since the September 11th terror attacks. Airlines around the world have cut services and dismissed staff as their business has plunged in the wake of the crisis. They are also struggling with increased security costs.
Question 22 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question.
Now listen to the news.
22. After the terrorist attacks in the United States, insurance rates soared as much as ____.
A.100%
B.200%
C.500%
D.1000% 请帮忙给出正确答案和分析，谢谢！