Questions 4 to 5 are based on the following news. At the end of the news item，you will be given 15 seconds to answer the questions.
Now listen to the news.
4. What is mainly talked about in the news item?
A. Russian army have freed the crew of a ship seized by Somalia pirates.
B. Danish special forces have captured Somalia pirates on a cargo ship.
C. Somalia pirates have seized the crew of a cargo ship.
D. Danish Special Forces have freed the crew of a cargo ship seized by Somalia pirates.
5. We can infer from the news that the pirates left the cargo ship possibly_____.
A. after the troops arrived
B. before the troops arrived
C. when the troops arrived
D. after fighting with the troops
