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专限时训练(二十) [完形填空第二节(二)] (限时：每篇6分钟) (一) I’m very glad to receive your letter. From your letter, I know you have shown __1__ great interest in inventing new things. That’s great. As for how to be an inventor, there is no quick answer to __2__ . Coming from different cultures and having different backgrounds, inventors do not seem to have much __3__ common. But creative thinking, __4__ is greatly valued, is perhaps the basic skill an inventor should have. In order to explore new possibilities, you will have to learn to break __5__ from old thought patterns. When you get stuck, try to look at the problem in __6__ many ways as possible. Each new way may improve your understanding. More importantly, always keep it in your mind __7__ success is no accident. It is the result of a long process of trial and error. Above __8__， the main task for you is to study hard and try to learn more knowledge. This, of course, will lay a solid foundation. Hope your future invention will make a difference. 1．________ 2.________ 3.________ 4.________ | 
