A、25. B、3. C、17. D、100. A信息明示题。由A further 25 people survived．可知，25个人获救了，故选A。

The bodies of dozens of African immigrants, discovered off the Italian coast last week, might have been thrown overboard, Italian officials said on Monday. A coast guard spokesman said 15 illegal immigrants, all believed to come from Somalia, survived being thrown into the Mediterranean Sea. But one of the survivors, a woman, was in a serious condition. They told the coast guard that their boat had left Libya 20 days before, with around 100 immigrants aboard. They said most had died during the trip. Last Friday, 7 Africans, including 3 children, died before their boat could reach the island. A further 25 people survived.
5. How many of the immigrants died after being thrown into the sea?
6. Where the illegal emigrants came from?
7. How many people did survive?