6.David wanted to buy a bicycle,but it was not so easy.He planned to buy a good one,(58)butit would be expensive.After looking at different types of bicycles in many bike shops,he(59)decided(decide) to buy a mountain bike.However,that was not all.He also had to get many accessories (配件 ) for it.Since he couldn't afford(60)to buy(buy) them all at once,he bought a helmet and gloves first,and then,tools,bags to hang on the bike and special bike shoes and a light.After that,he found that all these were (61)actually(actual) more expensive than the bike.
With this bike,he started to train himself to be a bike racer,(62)whichmight take a lot of time and energy.This was going to be a very difficult process and could be very(63)tired( tire) at first.However,in order to be(64)agood racer,it was necessary.He had to ride 200-300 miles each week.In addition!he had to be very(65)careful(care) with what he ate and drank.Whenever he ate or drank something unhealthy,such(66)ascandy or coffee,he was slowed down and his training was disrupted (中斷).(67)Whatwas even more challenging for David was that he also had to work full-time to support himself.