People do not analyse every problem they meet. Sometimes they try to remember solution from the last time they had a【21】problem.

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问题     People do not analyse every problem they meet. Sometimes they try to remember solution from the last time they had a【21】problem. They often accept the opinion or ideas of other people. Other times they begin to act without【22】, they try to find a solution by trial and error. However, when all of these methods【23】, the person with a problem has to start analysing. There are sever al stages in analysing a problem.
    First, the person must recognize that there is a problem. For example, Sam’ s bicycle is bro ken. Sam must【24】that there is a problem with his bicycle. Next the person must【25】the problem. Sam can repair his bicycle, he must know why it does not work. Now the person must look for【26】that will make the problem clearer and lead to possible solutions. Suppose Sam decides that his bike does not work because there is something wrong with the brakes. At this time he can look in his bicycle repair book and【27】his friends at the bike shop. After【28】.the problem, the person should have several suggestions for a possible solution. In the end, one suggestion seems to be the solution【29】the problem. Sam, for example, suddenly sees there is a piece of chewing gum(口香糖) stack to a brake. What he will do is to clean the brake. Finally the solution is【30】. Sam does it and finds his bicycle works perfectly. In short he has solved the problem.

选项 A、explain
B、prove
C、show
D、see

答案D

解析 山姆的自行车坏了,山姆必须知道车子的毛病所在。A项explain解释,说明;B项prove证实,证明;C项show显示,表明;D项see知道,获悉。可知正确答案是D项。
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