People do not analyse every problem they meet. Sometimes they try to remember a solution from the last time they had a  36  problem. They often accept the opinion or ideas of other people. Other times they begin to act without   37 ; they try to find a solution by trial and error. However, when all of these methods  38  , the person with a problem has to start analysing. There are six  39  in analysing a problem.
  40 , the person must recognize that there is a problem. For example, Sam’s bicycle is broken, and he cannot ride it to class as he usually does. Sam must   41  that there is a problem with his bicycle.
Next the person must  42  the problem. Before Sam can repair his bicycle, he must know why it does not work. For example, he must  43  the parts that are wrong.
Now the person must look for  44  that will make the problem clearer and lead to   45  solutions. For example, suppose Sam  46  that his bike does not work because there is something wrong with the brakes.  47 , he can look in his bicycle repair book and read about brakes, talk to his friends at the bike shop, or look at his brakes carefully.
After  48  the problem, the person should have several suggestions for a possible solution. Take Sam as an example  49, his suggestions might be: tighten or loosen the brakes; buy new brakes and change the old ones.
In the end, one  50  seems to be the solution to the problem. Sometimes the  51  idea comes quite  52  because the thinker suddenly sees something in a  53  way. Sam, for example, suddenly sees there is a piece of chewing gum stuck to a brake. He immediately hits on the solution to his problem: he must  54  the brake.
Finally the solution is  55 . Sam does it and finds his bicycle works perfectly. In short he has solved the problem.

A．serious B．usual C．similar D．common

A．practice B．thinking C．understanding D．help

A．fail B．work C．change D．develop

A．ways B．conditions C．stages D．orders

A．First B．Usually C．In general D．Most importantly

A．explain B．prove C．show D．see

A．judge B．find C．describe D．face

A．check B．determine C．correct D．recover

A．answers B．skills C．explanation D．information

A．possible B．exact C．real D．special

A．hopes B．argues C．decides D．suggests

A．In other words B．Once in a while C．First of all D．At this time

A．discussing B．settling down C．comparing with D．studying

A．secondly B．again C．also D．alone

A．suggestion B．conclusion C．decision D．discovery

A．next B．clear C．final D．new

A．unexpectedly B．late C．clearly D．often

A．simple B．different C．quick D．sudden

A．clean B．separate C．loosen D．remove

A．recorded B．completed C．tested D．accepted