.Passage OneQuestions 21 to 25 are based on the following passage.It was the worst tragedy in maritime (航海的) history, six times more deadly than the Titanic.When the German cruise ship Wilhelm Gustloff was hit by torpedoes (鱼雷) fired from a Russian submarine in the final winter of World War II, more than 10,000 people - mostly women, children and old people fleeing the final Red Army push into Nazi Germany - were packed aboard. An ice storm had turned the decks into frozen sheets that
