Within an hour, a doctor told the men that Marcus was nearly brain dead, and would only get worse. Doctors talked of turning off the life-saving machine and asked if the family would like to give away his heart. The answer was "yes".

　　On January 6, firefighters lifted Marcus' coffin (棺材) - covered with an American flag - onto a yellow fire engine. Hundreds of firefighters from all over the state joined the procession (行列) through Newmark streets. Children watched silently from school windows. The day Marcus died, his heart was given away to a young girl. His family said that it was the second life Marcus had saved.

21. After reaching the top of the ladder, Marcus _____.

A. was very afraid and nervous B. couldn't see anything clearly

C. found it difficult to get down D. was knocked off and got hurt

22. The underlined word "unconscious" in Paragraph 2 means "_____".

A. homeless B. senseless C. breathless D. helpless

23. We can infer from the end of the text that Marcus' family might feel _____.

A. sad but proud B. shy but excited

C. angry and doubtful D. worried and surprised

The British are known for their sense of humor. However, it is often difficult for foreigners to understand their jokes. The main point to remember is that the British often use understatement.

Understatement means saying less than you think or feel. For example, if someone gets very wet in a shower of rain, he might say, "Its a little damp (潮湿的) outside." Or, if someone is very impolite and shouts at another person, someone else might say, "She isn't exactly friendly." Understatement is often used in unpleasant situation or to make another person look silly. Understatement plays an important part in British humor.

Another key to understanding British humor is that the British like to make fun of themselves as well as others. They often laugh about the silly and unpleasant things that happen to our everyday life when someone accidentally falls over in the street. They also like to make jokes about people from different classes of society. They like to make jokes about their accents, the way they dress and the way they behave. What's more, the British love to watch comedies (喜剧) about people who do not know how to behave in society. The comedies series Mr. Bean is a good example of this kind of humor.

Mr. Bean is the character created by British actor Rowan Atkinson in 1990. Mr. Bean doesn't talk often, and instead he uses his body movement and facial expressions to make people laugh. Perhaps what makes Mr. Bean so funny is that he does things that adults in the real world cannot do. Mr. Bean is popular in many countries around the world because you do not have to speak English to understand the humor. Because of this, many people have become familiar with the British sense of humor.

24. Why is it difficult for foreigners to understand British jokes?

A． The British often enlarge the fact.

B． British jokes are connected with many different cultures.

C． British jokes are not as funny as jokes in other countries.

D． The British try to make out that something is less important than it is.