People do not analyse every problem they meet. Sometimes they try to remember a solution from the last time they had a__26problem. They often accept the opinion or ideas of other people. Other times they begin to act without__27 ; they try to find a solution by trial and error. __28_, when all of these methods__29 , the person with a problem has to start analysing. There are six__30  in analysing a problem.
__31the person must recognise 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__32  that there is a problem with his bicycle.
Next the person must__33the problem. Before Sam can repair his bicycle, he must know why it does not work. For example, he must__34the parts that are wrong.Now the person must look for__35that will make the problem clearer and lead to__36  solutions.For example, suppose Sam__37that his bike does not work because there is something wrong with the brakes. __38  , he can look in his bicycle repair book and read about brakes, __39his friends at the bike shop, or look at his brakes carefully.
After__40the problem, the person should have__41__suggestions for a possible solution. Take Sam as an example__42 ,his suggestions might be:tighten or loosen the brakes; buy new brakes and change the old ones.
In the end, one__43  seems to be the solution__44the problem. Sometimes the__45  idea comes quite__46_because the thinker suddenly sees something new or sees something in a__47 way. Sam, for example, suddenly sees there is a piece of chewing gum(口香糖)stuck to a brake. He__48 hits on the solution to his problem:he must__49  the brake.
Finally the solution is__50  . Sam does it and finds his bicycle works perfectly.In short he has solved the problem.
26.A.serious        B. usual          C. similar           D. common
27.A.practice       B. thinking       C. understanding      D. help
28.A.Besides        B. Instead        C. Otherwise         D. However
29.A.fail           B. work          C. change          D. develop
30.A.ways          B. conditions      C.  stages         D. orders
31.A.First         B. Usually         C. In general        D. Most importantly
32.A.explain       B. prove           C. show            D. see
33.A.judge         B. find            C. describe        D. face
34.A.check         B. determine       C. correct         D. recover
35.A.answers       B. skills          C. explanation     D. information
36.A.possible      B. exact           C. real           D. special
37.A.hopes         B. argues          C. decides         D. suggests
38.A.In other words   B. Once in a while  C. First of all    D. At this time 
39.A.look for      B. talk to         C. agree with       D. depend on
40.A.discussing    B. settling down   C. comparing with   D. studying 
41.A.extra         B. enough          C. several          D. countless
42.A.secondly      B. again           C. also             D. alone
43.A.suggestion    B. conclusion      C. decision         D. discovery
44.A.with          B. into            C. for              D. to
45.A.next          B. clear           C. final            D. new
46.A.unexpectedly  B. late            C. clearly          D. often
47.A.simple        B. different       C. quick           D. sudden
48.A.fortunately   B. easily          C. clearly          D. immediately
49.A.clean         B. separate        C. loosen           D. remove
50.A.recorded      B. completed       C. tested           D. accepted