题目

（题型一）若一个多边形的内角和是540°，则这个多边形是_______边形. 答案：【答案】5.【解析】设这个多边形是n边形，由题意得，(n-2) ×180°=540°,解之得，n=5. 给下列问句选择正确的答语。 (     ) 1. How old are you?                                                                       (     ) 2. What's your favourite colour?                                                         (     ) 3. What do you like to do?                                                               (     ) 4. What are you wearing?                                                                (     ) 5. Where do you live ？                                                           (     ) 6. How do you go to school?                                                               (     ) 7. What's the first day of the week?                                                      (     ) 8. How's the weather today?                                                               (     ) 9. What's your address?                                                                    (     ) 10. When is your birthday?         A. I like to write stories.    B. I'm wearing shorts.          C. I live near our school.      D. I'm 12.                     E. It's red.                      F. By bike.                   G. My birthday is May 7th.       H. Sunday.                    I. My address is 3 Park Road.  J. It's cloudy.