4．The following is a part of an interview about the London Cycle Hire Scheme．
Yang Li：Mr．Boris，as Mayor of London，what's your purpose of launching this scheme？
Boris Johnson：I want to get people out of their cars onto bicycles Because I think we have far too many people，who waste time sitting in traffic jams，going mad and bending their steering wheels hen they should d be on a beautiful new bike like this cycling in lovely London weather across very flat roads in great safety and enjoying the open air．
Yang Li：London is a big in durational city with thousands of visitors pouring in every day．I wonder whether they are tempted（动心的）by a bicycle ride in London．Let's find out what people think of the scheme，and what the advantages and disadvantages are？What's your name and where are you from？
Cyclist 1：I'm Parcel from California．I think the Mayor's scheme to introduce the cycles into London is a fantastic incentive（动机）for people of all ages from different countries．Apart from promoting fitness and health，it's a fantastic means to travel across London．
Cyclist 2：I'm William．Sure it's a great scheme； it's good for the environment，saves money and reduces traffic．
Yang Li：Would you show me how to start it？
William：Yes，you just take the key and where it says membership key just press it in and wait for the green light，you should see a green light come on…there we go，now you need to pull the bike quite hard．There we are，and that's it．
Cyclist 3：I am Ken．I found it great．It's faster than walking．It saves me time and it keeps me fit．
Yang Li：Ok．Any disadvantages？
Ken：There often isn't anywhere to park the bicycle when you've finished with it so you have to ride further than you want to．
Yang Li：Right．Would you recommend more people using it？
Ken：I certainly would，the more the merrier．
21．According to Boris Johnson，A．
A．this scheme will help reduce traffic jam
B．cycling is safer than driving cars
C．drivers can cycle o avoid going mad
D．it's fun for drivers sitting in traffic jams
22．Which of the following can we infer from the passage？B
A．Cycle hire is intended for the young only．
B．Cycle hire has more advantages than disadvantages．
C．The scheme aims to improve Londoners'living conditions．
D．Cycle hire is the most popular means of travel in London now．
23．Which of the following is NOT mentioned in the interview？D
A．The purpose of the scheme．
B．The advantages of cycle hire．
C．The procedure of starting a bike．
D．The designed location for bike park．
