专题限时训练(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_
