These days，many people enjoy biking．But there is a lot to think about before you buy a bike．There are many kinds of bicycles to choose from．Thar's why it is of ten good to an expert （专家） for advice．

Different bicycles can do different thing．Some of the mare made to be ridden on smooth roads．Others are for rocky roads，and some bikes can be ridden on both．Fist，ask yourself where you plan to ride city？On mountain trails（ 小路）？Or both？When you decide，you stat to choose the bike for your need．

Next，be sure you get the right size of bike for you．Bicycle stores will take to measure your size．Then they put the data（ 数据） in a computer．The computer will suggest a good size for you．

Besides the kind of bike and the size，you also need to have the right pieces of parts，like handles．lights and seats．And finally，you need to know how to ride your bike comfortably．An expert in a bike store can help you with the things．Then you'll be ready to hit the road．

61．How is it to choose a bike？ 　　

A．	It's easy．
B．	It's difficult．
C．	It's funny．

62．How many kinds of roads are mentioned in the second paragraph？ 　　

A．	One
B．	Tow．
C．	Three．

63．What should you think first when you choose a bike？ 　　

A．	The person who rides the bike．
B．	The shop which sells the bike．
C．	The road where you ride he bike，

64．Which of the following is TRUE？ 　　

A．	The computer will suggest a good size for you．
B．	The parts like handles，light sand seats should be expensive．
C．	You needn't learn how to ride the bike．

65．Which is the best tile of the passage？ 　　

A．	Riding Bicycle is Fun
B．	Choosing a Bicycle
C．	Planing a Bicycle Trip．