In the end,one suggestion seems to be the solution 11 the problem.Sometimes the final idea comes quite 12 because the thinker suddenly sees something new or sees something in a 13 way.Sam,for example,suddenly sees there is a piece of chewing gum(口香糖) stuck to a brake.He 14 hits on the solution to his problem:he must clean the brake.
Finally the solution is 15 .Sam does it and finds his bicycle works perfectly.In short he has solved the problem.
1.A.serious
B.usual
C.similar
D.common
解析:有时人们从上次类似问题的解决方法中寻找答案。
答案:C
2.A.fail
B.work
C.change
D.develop
解析:然而,当所有现成的、不动脑筋的方法解决不了问题的时候,人们不得不开始分析这个问题。
答案:A
3.A.ways
B.conditions
C.stages
D.orders
解析:从后面各段可以得知分析问题有六个步骤。
答案:C
4.A.explain
B.prove
C.show
D.see
解析:首先,Sam一定要看出单车有问题。
答案:D
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