3. It can be inferred from the text that public services .

　　A. have benefited many people

　　B. are the focus of public attention

　　C. are an inappropriate subject for humor

　　D. have often been the laughing stock

　　4. To achieve the desired result, humorous stories should be delivered .

　　A. in well-worded language

　　B. as awkwardly as possible

　　C. in exaggerated statements

　　D. as casually as possible

　　5. The best title for the text may be .

　　A. Use Humor Effectively

　　B. Various Kinds of Humor

　　C. Add Humor to Speech

　　D. Different Humor Strategies

　　参考答案：CBDDA