The President has started using look­alikes during some public appearances. Dave is offered a chance to "serve his country" by becoming one. However things go wrong. The President becomes very ill and Dave ends up acting as the President forever.

　　 Director Ivan Reitman who made the popular and successful comedies like Twins Ghostbusters and Legal Eagles could have gone for easy laughs by making fun of the American government. Instead Dave is an attractive comedy about an ordinary man in extraordinary situations. Kevin Kline gives a double performance as Dave and the President and Sigourney Weaver is at her best as his First Lady. The love story that develops between her role and Dave is a real classic(经典)．

　　 The film is 100% American. However if you've ever felt that anybody could do a better job running the country than the people in power，then you'll enjoy Dave!

　　4．What is the purpose of the text?

　　A．To tell the reader about the American government.

　　B．To discuss the Americans' ideas about the President.

　　C．To make a comparison between Dave and other films.

　　D．To introduce a new film to the reader.

　　解析：主旨大意题。本篇分五段，首段引起话题，导入正文，介绍Hollywood comedy，第二段和第三段介绍影片情节内容，第四段主要介绍导演、演员，第五段总结--你会喜欢这部影片，故全文的目的是介绍一部电影。

　　答案：D

　　5．Who plays the role of the President in the film?

　　A．Sigourney Weaver.　　B．Kevin Kline.

　　C．Bill Mitchell. D．Ivan Reitman.

　　解析：细节理解题。由第四段倒数第二句可知：Kevin Kline演了两个角色：Dave Kovic和总统。根据剧情介绍可知：Dave Kovic因为与总统长得相像，曾经做过总统的替身。因此，可用一个演员饰演这两个角色。C项Bill Mitchell是总统的名字，D项Ivan Reitman是导演的名字，只有B项是男主角的名字，故选B。

　　答案：B

　　6．The underlined word "one" in the 3rd paragraph refers to ________.

A．the President B．the director