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　　What is red but green, open but closed and old but new? Answer：London’s new double-decker buses．

　　The traditional red double-deckers are 　　1　　 symbol of London．Their symbolic status was settled in 2008 when one bus made the longer-than-usual trip to Beijing 　　2　　(collect)a very special passenger：the Olympic Flame．

　　Now a new bus design 　　3　　(uncover)and it has been exciting Londoners．

　　The new bus uses more efficient green technology and has two staircases and an open platform, 　　4　　(enable)people to hop on and hop off．It also has a unique design for the front end, which gives it an innovative(新颖的)look．

　　Despite 　　5　　 innovations, the design is not all new．Its outward appearance takes after London’s faithful old double-decker, the Route master．

　　In July 2008 a 　　6　　(compete)was launched by the London Mayor, Boris Johnson, to design a new Route master bus for the capital．There were over 700 entries, 　　7　　 several designers jointly winning the ￡25,000(244,000 Yuan)prize．

　　The new double-deckers, 　　8　　 have three doors to speed up boarding, are expected to be in service in 2012．

　　Mr．Johnson said：“This iconic new part of our transport system is not only beautiful, but also has a green heart beating beneath its 　　9　　(attract)appearance．”

　　He expects cities around the globe to be “beside themselves with envy” for 　　10　　 he described as a "stunning red symbol" of 21st-century London．